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Here are a couple of addendums & FAQs to cover some of the questions ppl raised in this comment section:

Q: "I thought any model being out of cover prevented the entire unit from gaining cover?"
A: You're right; it does... *from the perspective of each attacking MODEL*, so one model in a unit that can target an enemy without cover is treated seperately from a different model in the same unit against whom the target would gain cover, hence the splits I showcase in this video.

Q: "Isn't a unit's T only counted as the highest between Bodyguard models?"
A: Yes kind of; you ignore any attached CHARACTER models in favor of Bodygaurds when calculating T. To note; at the time I created this video the addendum entry that you ALWAYS count the higher T in a non-attached unit hadn't been released yet (hence using the bodyguard rules for reference there), but I chose to include that point in the video anyway since there wasn't another reasonable way to calculate it. The writing was on the wall that it counted highest T even in non-bodyguard units.

Q: "Aren't destroyed models retained on the battlefield until the end of all the attacker's attacks, meaning that their allocation group cannot change?"
A: Only if they are affected by a rule that triggers an effect WHEN they are destroyed. If they DO have such a rule they may lock in their allocation group to be the first one for the rest of that attack activation (the rules are a little unclear regarding whether destroyed models on the battlefield are still 'in play' for this purpose, but I'd err on the side that they are just to be safe), however this isn't normally the case and such rules are fairly rare.
Note that shifting allocation groups is only a rule that checks "once all models" are destroyed, not "when each model" is destroyed, so it does not qualify as a trigger for this effect.
This means that once an allocation group contains no models on the battlefield that have lost any wounds, allocation groups can be recalculated during the next attack sequence.

Q: "How does Feel No Pain and random damage work with fast dice saves?"
A: Once the saves have determined how many attacks will deal damage, the defender then assigns that those attacks to models one at a time just like in previous editions. This means that random damage and FNPs should be resolved in sequence, one at a time, starting with the current allocaiton group.
This is very important if you have effects that modify or re-roll damage, since technically you won't have seen all the damage rolls yet all at once.

An add for a semi obsolete terrain set without mentioning that it's obsolete in 2 weeks is a little wild EDIT: This thing is sold as a competitive terrain set, if it was sold as anything else it wouldn't be an issue.

Love that you ran the most complicated scenario at the end, Precision with partial Cover.

The thumbnail makes sense if you use your imagination and remember that inside the ruins there is no such a thing as a flat surface, but mountains of debris of all sorts behind which to take cover. You can "see" them, as in knowing where they are, but that doesn't meant that you can easily hit them.

First channel that actually explains things in depth with showcased scenarios, instead of repeating book text with graphics ( that also is out of a paywall system), you have my sub sir.

This is probably THE BEST explanation vídeo of 11 out there, using TTS go make it more visual instrad of only rules screenshots is brillant

Page 66 says the toughness for a unit is determined by the bodyguard models toughness, not the highest toughness of a model in the unit. You only use the highest toughness of a model when the only models in the unit are leaders/support models.

Important note as per page 87 on when to remove destroyed models: that destroyed model “is only removed after that attacking unit’s attacks have been resolved.” Page 17 gives the definition of “attacks being resolved” as, essentially, the unit has made all of its attacks.

This is important in that you cannot swap to a different allocation group (of the same priority) until all of the models in the original allocation group are destroyed. Another way to think of it is that destroyed models are still part of the allocation group and the damage allocation priority list goes: allocation group that has taken damage, un damaged allocation group, damaged character allocation group, un damaged allocation group.

TLDR: @ 12:34 deathwatch player cannot choose to move the storm shield group up in priority because the hammers group has a model that has taken one or more damage and must be first. In fact, none of the allocation group swaps done between 12:30 and 17:00 are allowed with the rules as written so far.

Who's up for a drinking game whenever Trevy says "idiosyncrecy" ? 😁

And remember, the changes to saves are supposed to save time...

This, shooting phase gave me an anuerism

Be ready for a big FAQ 'cause tournaments players need to break game rules 😂

17:25 "highest T characteristic of one or more BODYGUARD models", Trevy, not highest T of models in that unit.

This is going to make the shooting and fighting take som much longer..

Dev wounds are applied after normal wounds from what I read not before.

My brain hurts

Another youtuber (happy krumping) was saying you wont be able to change allocation in the middle of an activation, and have to stick to the same allocation order. I think from the core rules only it should work how you said but there might have been clarifications elsewhere

Almost all other wargames rules writers: 'OK here's the simple rules for positioning, attack rolls cover etc. Nice and simple chaps, crack on and have fun'.
GW Rules writes: 'Hold our beers...'

Please make more of these!!

Only um actually; the precision weapons apply Precision at tbe declare order stage. This means LoS to the character is based on whether a model in the attack group has LoS on the character.

In Trevy's shroudrunner example, because the two that have LoS are in a different attack group (ie no cover), their attacks would have precision but they would not apply it to the other attack group of into-cover weapons. This does mean that if there was a Vet more out in the open, the rest if the squad could have shot with Precision if they werent shooting into cover (or could remove cover with a Stratagem or army rule).

I read this as Precision weapons want to all be in the same attack group if they can find that LoS with one model.

Hope it helps!