I have a valid comment on a UU team. ... For once. needz moar rapid spin
Namely in fear of stacked hazards. Regenerator won't save ya from bad poisoning via TSpikes. A Poison type, if one can be fit into the team (Toxicroak over Mienshao? iunno lawl), would suffice as well since it's not like you have to fear Rocks to Spikes terribly. Not 'less they're both together with the latter at three layers.
From what I hear, stall is much more viable the lower down ya go in tiers, so just somethin' t' keep in mind.