yeah, that's all valid. continuity on the O line is a real thing, and the more you have it, the better. it really ins't a good situation for this staff coming in to not have 10 guys you can work with. you have to pick a poison.
do you create depth by cross training because you know you don't have the #'s.....knwing it's at the risk of giving up continuity, which will limit you when it comes time to call plays?
you've got some talent in the O line, but not a lot of experience and virtually no experience playing together as group. the communication and understanding of what the guys on either side of your are going to do in any given sitation is huge for the success rate of an OL. throw in TE's that are part of that blocking scheme, how to call the blocking schemes, how to change them based on what the defense is giveing you, understanding where the backs are going to be, where they're supposed to go, what the QB is going to do, and when...........
and do that all that pre snap, and then executed it all in 3-5 seconds after the snap...............it's hard.