i was thinking about very simple sounding mechanic, where, if you are round start xeno, you are “Generation I” Xeno, this xenos who are from beginning of game don’t have evo points drawback (by drawback i mean it go like Max evo points and it slowly dissapear), the next “Generation II” with is created by hugging caps and getting larvas from it, will have actual points drawback.
If you ask why, i tough it would be nice if round start xenos get rewarded for not dying and have ability for mutate, if they die and get back as larva, they will be another generation, with dont have this ability to keep evo points.
(of course it touch balance here, so i leave it for thinking here)