>>723577904
It would be singularly difficult to make any gameplay about it.

>mecha game
>only a dozen boss-like enemy
>battle last less than 5 minutes, unless you are sent into an alternate dimension
>some boss are not fought at all
>each battle require its own gameplay and weapons
>up to 3 Eva can fight, not necessarily under your control
>closest you have of enemy mook are the JSDF chopper when they turn against you.

If you asked me to make a mecha game inspired by Evangelion I could deliver (plugsuit girls included), but adapting Evangelion itself?