Acronym doesn't really matter to me, but since I am used to SCMM, I guess Mecurial.
My favorite mechas in terms of looks are as follows, in no particular order;
I think Cosmic Talon had amazing attack animation but its regular look wasn't great(plus it couldn't be fashionably customized).
Psychic Wing had the best-looking legs a mech has ever had, no contest.
Dharmap has this small part near his Head that shows up on any other Head you equip, and idk if it's a big or not, but I think it looks really good with anything, it's kinda like a scanner thing that Vegeta had on Dragon Ball Z.
Morehawk hovered, and it gave him an almost ominous appearance. Don't overuse it, but don't let it disappear.
Master Blaster was bulky, but he was still able to equip smaller arms w/o looking atrocious. I don't know how you guys did it, but it looked great.
Strider had great shoulders. I noticed you used them on some of the Westion arms as well. These are great shoulders and should be seen more, I feel. In fact, they should replace the generic spiky shoulder that you see with the Cloverblades, Photon Sniper, Glocket, and so forth. But that's just one man's opinion.
Alright, hope that helps.