Good luck on finding groups for Xeno and such where there are no elitists saying "you must have this much health, you, must have this rank of armor and gear". After all, the elitists need good geared people to cover up their slack.
You should make gear minimums or w/e for these sort of missions, else tell people to **** about being under geared. Under geared individuals do not cause the wipe, it's the elitists attitudes that does. Besides, they are quitters if they have to encounter any sort of mission where skill is required. Losers.