I will agree with two ideas on this thread
1) it's been awesome to try different things while in the gearbox and push the hardware to its limits just to learn something (hence why high RoF is fun to try)
2) High RoF guns eat ammo faster than you can possibly imagine. My current project AEG is firing approx ~1700rpm (11.1V) and it chews through a mag far too fast for it to be reasonable for actual gaming. Luckily I can undervolt it for actual games or limit myself to burst, semi, etc.
Now you know