In missions where there are various targets that need to be reached/met, notably Facility 794-ON6 (Homri Cluster), there should be respawn points that aren't all the way at the beginning of the map. Its infuriating to wipe then doubly so having to run/walk/crawl back across the map which literally takes like an hour.
ok, maybe 3 minutes.
Also, just to throw this out, there should be a built in ability where people cling to walls during fights, ala Gears of War. I've almost never seen anyone in any trek movie or episode try NOT to find shelter and then try to pew pew them.