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I'd swap Rampardos's HP with its Speed, then take maybe 20 or 30 points off its Special Attack and split them between Speed and HP. This would put it a little above 100 base Speed, just fast enough for it to work as a frail sweeper and actually exploit that 165 base Attack. I'd leave a token amount of Special Attack in because GF seems allergic to making anything's less useful attacking stat a really low number and so that if for some reason you actually want to use special moves with it during single-player mode they'll do non-zero damage.
Also, does it bother anyone else that Rampardos, of all things, CAN'T have Rock Head?