Some of my thoughts as to why they wait until mid to late rounds for OL and may depend on 1 guy, Morse.
If Morse returns and finishes his contract, I think our starting 5 are basically already in place.
Dawkins, Ike (I like Ike๐), Morse, Bates and Brown.
I think Ike returns and they like him, otherwise I don't think they would have kept him this year.
Doyle is already here as a SWT. I believe they will re-sign Saffold as he already stated he will do whatever it takes to stay. I also think they will re-sign one if not two of Q, Hart or GVR to have veteran depth or a FA guard(like a Risner?). So you're only looking at some depth and future starters for 24' and beyond. So I just don't see day 1 or early day two picks being used. Plus you still have OT's Anderson and Van Demark on the PS for the past year.
May not be popular, but all in all, 3rd or later for OL.
Also, Given our track record easing rookies in, I just don't see an early pick being used.