No idea how good Felder is, but do agree that the philosophy he and Thomas subscribe too is different than those from the Moffitt/Hatch/Cochran tree.
Also, just b/c someone is on 'Bama's staff does not make them a good head SC coach. For example, Richt had a Cochran protege at UGA (rumor was he was forced to hire him) who was not good--Richtd didn't bring him to UM and Kirby fired him day 1.
If we were looking (who knows), Viloria does check a lot of boxes and would assume he'd be available. Not sure why he did not go with Jimbo to TAMU though.