i agree with -a certain cost in ap for changing moduls. -a way to identify leaders: but not with name colorising, it will be to much easy. (i don't if you can be a sneak leader, but that could hapen to prevent that) But a perk like awarness could give you information about that, like "squad leader" or "fire team leader" displaying under hp or something.
I'm begining a full graphic guide for aop. It will contain very usefull informations and pro-tips and even more. It will be updated from time to time. here is the link: http://trashofphoenix.blogspot.fr/
snakes spears don't seems to work properly, not missing the target but just doing nothing in the log (the animation works and the spear appears on the floor after). plasma spear do not display any percentage when aiming a target (the rest works fine).
I will update this list after testing all the spears.
While doing retrieval mission and after killing grey deathclaws roaming here, i got a message like "14% of objective complete" (this message usualy shows up during search and destroy missions), the retrieval worked fine, but as i said it's a minor bug.