I really liked the cursor feedback over the reactors with the color coding showing what the reactor would accept, prediction of how much adding that food would load the reactor, and the different color indicating it would get overloaded. The music and sound feedback was great too
It was a bit too much for me to try to move my eyes between the queue of items below and all the reactors so I ended up mostly playing by mousing frantically over the reactors and placing what I could into the appropriate ones to balance them. If somehow the queue of items could have larger visibility or more centered in the screen I think that would have helped me. The help/tutorial was also somewhat daunting but the game (to me at least) was pretty self explanatory once I started playing it thanks to the UI feedback.
Quite fun when I got into the groove of it ! Best I managed was a C....