I think Basso had a tremendous Tour and should contend for a few GC wins in the near future. First he's only, what 25? He rode with LA in the mountains and I do think LA was looking to drop him. In the last TT he "only" dropped ~3 minutes which is a tremendous improvement for him. All that and he's got a strong team and very good DS.
Cunego is interesting as well and he's only 23. Soon, very soon he'll take the top spot from Simoni and Saeco is not a weak team.
I don't think either of these will threaten LA's new record but between them I look to see them win more than a few GTs.