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Hello, not sure where to report bugs/errors, but I just came against a Cinderace that changed type multiple times with Protean without switching out (went to Dark for Sucker Punch, then Fire for Pyro Ball). Protean should only now allow one type change unless you switch the Pokémon, correct?
Tsareena actually has a good niche in UU in a utility role: http://www.smogon.com/forums/threads/sm-uu-beta-slowbronite-diggersby-tornadus-t-volcarona-scolipede-banned-post-165.3591786/page-4#post-7179506
Dhelmise and Decuidueye aren't good, though, you're correct about that.
What about Starmie? Weavile's ban helps it immensely, and it has significant (and flexible) offense. It can also run a good defensive set as well (someone posted these earlier in the thread). Certainly a cut above most of the other possible spinners in the tier.