I'll make a tentative team for now.
My starter will be Litten. Nuff said.
For slot 2, I'll have a Water type, because I love that type and I'm sure Alola will have lots of water. Candidates include Wishiwashi, Pyukumuku, Bruxish, and Slowbro.
For slot 3, I'll have an Electric type, because this generation has introduced a lot of interesting options. Candidates include Vikavolt, Togedemaru, Tapu Koko, and Alola Raichu.
For slot 4, I'm considering either Mudsdale or Palossand. But if the Ground/Fighting gorilla leak becomes true, then that'll take the spot instead.
The last two slots are wildcards for now. Currently, I'm considering Pikipek, Mimikyu, Comfey, Lurantis, Morelull, Crabrawler, Sensu Oricorio, and Alola Sandslash.