I noticed that BI added a respawn module for players in multiplayer, I did not expect that since it's one of the easiest things to set up for a MP mision. Despite that every feature that simplifies something are welcome.

Having said that, I think that a respawn module for AI which you can personalize would be really useful, that means that if you place a group or a unit in the editor, that unit or group will respawn after dying as you had placed them in the editor (Flying, incargo, coordinates([...]modelToWorld[0,0,100[...]), addweapon ([...]this addMagazine "38Rnd_80mm_rockets"[...]), join a group/highcommand group etc...

It's a very interesting feature that would allow newbie users to make more complex missions,and create and personalize your own ''enemy waves'' gametype, or even create a 1 vs 1 domination mision with high command with respawning units.

In addition, a unit spawn when a condition is accomplished module would be nice, BIS_fnc_spawnGroup script puts a lot of limitations, so I think it would be nice if the units you placed in the editor (With names, and other scripts on it), could spawn after a certain point/trigger was activated.
http://forums.bistudio.com/showthread.php?175436-AI-spawning-after-enabling-trigger-waypoint {F22269}