From my view,
Don't lipo's last 20 minutes?
Pit stops ? (true story)They were mandatory and when they didn't do the "fake" pit they still got to bump to the "A".
Weight? Are speed controler's really as heavy as fuel ?
Batteries ? I've got one in my car controlling my stuff too like both servo's i need to run.
Mod'd motors ? I'm just as slow with my cheapy motor as when i had my V-specs, as long as it last the whole main i'm good.
Turn Marshalling ? Yeah i do have you beat there because i can redline my motor to get your attention and i'm guilty of failing to flip over an electric once.
Verdict = for club racing with not enough to form a class i would rather the few cars race with nitro and make for a fuller track than to turn M a field of say 3 quiet, boring, cars.