Yep. It was a combination of things over Roy's last few seasons.
First, Joel's heir-apparent (Jalek, who had all the requisite skills) turned out to be a knucklehead, and that started a cycle of make-do at the position, so to speak. 7th was NEVER gonna be a PG1, and Coby was a Combo who got by for a season due to his scoring and being surrounded by a VERY experienced supporting cast.
Then, Cole was only gonna be here for a season and had a very limited supporting cast, so yeah, then Roy tried to make PGs outta Combos with Caleb and RJ, and here we are.
As you said above, the logical next-in-line for PGU is now being wasted by that lame-brain Oats, despite a valiant effort by the current staff to rescue a recruitment that had gone south a year earlier. So... we missed there, but this Combo purgatory cycle HAS to be broken sooner rather than later, which speaks to why you and I have been crossing our fingers so hard over Mr. Cadeau...