Ja. I was joking at first but now thinking it through, I'd love to see this used as some sort of modifier or something. Those easy levels such as FSC would actually require team work and sticking together. Think of taking on massive mobs without those frames to protect you. Not only would it help with the "Spiral Knights isn't Hard Enough" thing going on, it would actually overall increase the keyword of "Teamwork" if not only slightly.
Opinions?
I agree it'll be harder, but most 'pros' who complain about difficulty dont even get hit and not much would change without more aggressive enemies.