A x10 x25 x50 x100 purchase button would be nice. yes, you can click and hold to upgrade super fast, but I like smooth number right at a milestone. with click and hold you can get odd numbers like version 8.1 instead of 8.0.
A global multiplier x2 for every assimilation would be nice. x2 is not much compared to the next assimilation. Right now every assimilation feels like a hard reset with no progress. With a x2 multiplier we would get a little feeling of progress.
 "NGU IDLE"){kind=icon}
 "Idle Intelligence"){kind=icon}
 "Realm Revolutions"){kind=icon}
 "Antimatter Dimensions"){kind=icon}
You can actually play them again, and I am planning on making highscores for each one.