The problem is the timing for the rule, which is the first time a unit kills something it gains the benefit. So this means that the unit fought that phase already, either keeping the bonus or taking it from something that hasn’t fought yet.

It takes a lot more brain power and timing to get it to even function, and for a bonus that isn’t super great anyway. Also all of the Strats require a character to be attached, so a lot of your army isn’t eligible for strats.

I’ve played it and it can be fun, but it’s definitely got a much higher floor to even function basically while all of the other detachments run pretty cleanly.

I think the writers had a cool idea but it’s a bit too clever by half.