Has bell ever opened in tests?
Not sure but presume your thinking if Lyth was dropping, Bell moves up(again) and someone else slots in to the middle(it's getting packed in that middle order!!)
Hales is giving it a right hammering for Notts today.England might look at Bell opening with Cook and slotting Hales in at 3 or 4 maybe........
Hales hasn't scored massive runs this year in the Championship but as has been pointed out on the forum, Warner was a one day player now a very good test player.
Personally speaking, and this won't be popular on here I don't think(!), if Lyth gets dropped I would move Bell up and bring back Balance.
As I said I don't expect that to be a popular view