The Buttler idea is an interesting one. England’s selection policy currently seems to be that they pick someone who’re playing well at World level ( Root, Bairstow etc) or ripping up county level cricket (Pope, Overton). Crawley is neither and needs to go back to county cricket, sort out his technique, get a bucketful of runs and come back.
Buttler is a good quality player. His technique is better than, say Roy who they experimented with and if he gets in adds impetus, taking games away from teams in 30 or 40 overs. There would need to be a recognition that he may fail but what he adds when he gets going outweighs that. A little like Warner at the top for the Aussies.
I cannot see us reverting to a Sibley type opening the batting again for a while.
Might be worth a series of Buttler up top.
Despite Leach’s ten wickets, I think we still lack a real quality spin bowler. Bizarrely New Zealand arguably have the better spinner in Patel and didn’t play him.