If you were pinned down under heavy enemy fire with no escape routes in sight it would be handy to have some kind of group teleportation/warp device. This small warp beacon could be deployed until the owner activates it and any allies within a certain radius will be transported to a precomputed destination (with their permission of course). This device could be really useful to a cloaker using stealth ninja tactics.
I play a decent amount of Infiltrator and Infiltrators don't need an emergency escape. They already have so many, the most obvious being the redeploy key. Pinned down, can't do anything, probably gonna die? Redeploy. Ran out of ammo, can't resupply? Redeploy. I've evaded entire squads with darklights looking for me specifically and randomly firing in all directions. I've been right in the middle of enemy attacks, taking them down one by one with my stabby stab. Infiltrators really don't need some sort of instant escape device...and definitely not a squad escape device.
