Well this would be the reason i rolled an Engineer and have specialized into ground combat. Even tho i agree about the spawns and uneven matches there's no need to complain about ground tactics, if your not happy just stay off the ground or re roll.
First off let me say that all classes are balanced b/c all classes have some sort of hold/stun/etc.
But really, you have to realize that you could be playing against people who are specialized in ground combat. When i created my toon i picked 4 ground abilities and spent every point ive gotton into ground combat. This is b/c i enjoy ground combat more than space.
I do agree that the matchmaking needs to be fixed b/c it doesnt matter what side your on in a 5 v 2, its still not fun :/
It's an annoying ability yeah but it doesn't really get you killed that often, there are numerous places to run it off using line of site on all maps. If you get caught in an open room, meh ... heal, buff, rifle butt them into stun or even stealth up if you have it.