I was actually going to make this a poll, asking whether either or both Bristol C & Swindon would be going up.
I think Sheff Wed will strengthen but I can't see them strengthening enough to finish in the top 2. Hull and Donny will provide more of a challenge than the shite coming down from division 1, and Tranmere definitely looked the business in the final third of the season.
I reckon any three from Tranmere, Bristol City, Swindon and Hull.