It would be nice to use more (and real) numbers notations - Q is what? Quadra or Quinti (shortened Qa and Qi)? after Q, there is immediatelly S - again, Sext or Sept (Sx and Sp)? and after you get past N (which I'm guessing should be Nonilion, but is not, because one Q and one S is missing), you get only OH MY GOD - I currently have about 334395082 OMG and it gets REALLY unreadable.
Also, it would be nice to have x10 and x100 buttons, if you purchase the ability to upgrade (for example) 100 levels, you then have to individually click each button 100 times - that is 1,200 more clicks after that and it gets really boring...
I am on map level 112 and I doubt I will go forward, because I would have to click the upgrade buttons (and buy the buildings etc) so many times, that it is only a chore. Otherwise I would love to try and get all the achievements
Wow, this upgrade really broke everything I had... First all the Nefastium cells I bought just before refreshing were spent and I had to buy them again. Then, When I "prestiged" for 72 prestige points, I lost everything. Not only my reactor design, but all the money (about 150 Qa). I happened again when I prestiged later - so if it is a feature, I did not find a warning about it beforehand
 "Immense Army"){kind=icon}
 "Reactor Incremental"){kind=icon}