but I've not had that impression for our current QB lineup
You're not the only one. Likely, no definitely not the last.
One thing is for certain. When the team is warming up in Arlington before the game who ever is running behind the first quarterback is our backup for game one. If I don't know by then and learn the day of the game I'm good with that. While I don't like the position being up in the air as it is now, there are attributes I like with JC, DC, and AM.