Erving is about as good of a swing tackle as there is in the league. Knight was good before he got hurt - but has been poor since.
I just don't understand the expectations people have for "depth." You're not going to lose players and not have a dropoff. "Next man up" is entirely a myth.
We got obliterated this year at offensive tackle.
We already know that Erving or Steele are probably starting left tackle by week 5 of next year, aka a bust or an UDFA. If you feel we're just fine with that, but insist we can't lose Gallup or the offense will fall apart, then it seems like you're playing fantasy football over there.
At tackle, we've got two stud starters with Smith and Collins. But neither has been available this year, and Smith is like this every year at this point, and may even retire. Behind him we have Erving and Steele.
Think about how nice we look at guard with Martin, Williams, McGovern, and Erving all available. Then we've got Biadasz, Looney, and Erving available at center. Our interior has great depth and good starters and a hall of famer.
The biggest difference between the interior OL and the tackle situations is that we've spent picks on the interior OL. Guards in 2018 2nd, 2019 3rd. Center in 2020 4th. In 2019 and 2020 I don't think we drafted a tackle at all. Steele, Knight, Hyatt are all UDFAs.
An OT by early 4th round is a good idea!