cooky
Winger
I get your point, but I think the main reason I would argue giving Sibley or someone a run over Denley is age to be honest. Sibley is 24 so there is plenty of scope for him to work and improve. With Denley he is already 33 (only a year younger than Alistair Cook), there is little long term investment and future planning there.He wasn't though, thats a lie, he has been one of the top 5 run scorers in county cricket over the last 2 seasons, you are wrong about that.
Your logic for picking Sibley is the same logic for picking Denly
and the average of your wicket keeper has no relevance to the average of Dominic Sibley or Crawley
You compare it the averages of the likes of Foakes and co in CC,nobody else.
I think the confusion in your post is probably influenced by the confusion in the selectors in all fairness
I have no idea if Sibley is good enough for test level but someone more of his profile should be given a go alongside Burns imo.