Mellish seems pretty involved with the Colts so far so it seems likely that he'll get a team spot and the Woodhull twins unofficially share another.
Bickley should be one of the genuine stars next season, along with Brennan & Jenkins. But even when he moves up, a top 5 of him, Bewley, Shuttleworth, Payne & Smith is enough to beat most teams before even accounting for the reserves scores. Whilst Mellish isn't poor by any means, even if the twins struggle initially. I think their let down will be when they face stronger sides at the end of the season who can match their heat leaders and if they have a lot of fixture clashes because they have 3 riders doubling-up, and I wouldn't be surprised to see Payne end the season in the Championship.