It's crazy, I was actually doing sketches of the MM1/Powered Up crew AND their weapons in the Mega Man 11 style, and many beat me to the punch!
This one's REALLY good, especially the designs of each "arm and gear" design! Fire Storm, Oil Slider and Thunder Beam look amazing!!
My only issue, which unfortunately is the issue with the MM1 crew (except for Ice Man) is that there are a lot of oranges, reds and yellows, so it could easily be difficult to pick out which weapon you're using without looking at the weapon icons, which is why I'd opt for giving Super Arm more of an earthy brown colour and Hyper Bomb some frag-grenade green.
All in all, fantastic work!