isntead of all the dmage just being health and heal again, why not have some damage like leg damage slows down the fireteam untill the use the med kit or stim?
you could use this to help split the team and pick them off. do you wait and go the speed of the slower guy or help him or just run and leave him to die and get to the reenforcment point?
Some kind of slowing injury would be really great.
Also bleeding damage where the fireteam get sliced with idk, the elder sword (give a reason to it) then they lose a few HP each second untill healed.
That would help use up the infinite heals and actually add more tension and allow predator to split up the team.

