Completely agree. If JT Barrett wins 10-11 games this year he should be the starting quarterback next season. He is going have a full year of chemistry with the skill players that Braxton doesn't have, Braxton would be extremely rusty (much to your point about not seeing live game action for 19 months), and JT might just flat out be better after a year of development. Also think it is worth mentioning we would be halting JT's development for a year with if we hand the job to Miller.
This of course is predicated on the fact JT does have a good year, which is entirely possible. He was a high commodity coming out of high school for a reason and is the backup as only a redshirt freshman. I love what Braxton did at Ohio State and was very upset when hearing the news, but I think it will be time to cut the cord with him if JT lives up to what he is capable of doing.