I forgot the poster who brought it up, but whoever it was made a good point.
The point was something to the effect of the difference between a good and great O-lineman isn't as great as the difference between a good and great WR.
All that to say that IMO Leatherwood could give you as good a return on your investment at 23 as Sewell could give you at three...with the added luxury of having experience at RG. Besides, Hunt looks about as good
In contrast, I don't know if you get that same return when comparing Marshall to the two Bama WRs. The o-line is fine. Another year, an offseason, and training camp and they will be better. Heck, if they had a good RB and WRs...who knows, they could have been good this year.