I like the idea of a small Eva game, but I'm not sure about some of the things being changed and some of the things not being changed. I mean, using original Angels would probably give the fights more tension, since only the GM would know what they are capable of. I'd also prefer the 5 minute limit for the plugs, but that's just personal preference.
Also, while I wouldn't recommend switching over to playing it, the tabletop game Adeptus Evangelion probably has tons of ideas for an Eva RP amongst all the dice stuff you can just ignore. I don't know what you have planned, but some extra ideas and inspiration wouldn't hurt.
So I suppose I'm kind of interested.