Not only do I think we've not seen the last of team plasma in the anime,but I think they will finally appear in their original uniforms here's why. In bw 117 a plasma grunt reported to Ghetsis progress on project f and near the end of the episode n climax cedric junipers assistants run to him informing him of new findings at the ice ruins plus clairs returning too. So I think that the ice ruins are in the declora arichpelo and team plasma under the command of the original team plasma commander (from the banned 2 parter) are here and have brought back whatever they found from the giant chasm. I mean why else would they put emphasis on the ice ruins and mention project f if nothing was gonna come of it?