Good point. However, logic is NOT part of the o-line building process in Miami. If Tua is left-handed, why did Grier go after a big-name FA (Armstead) for LT instead of getting someone better than Jackson at RT? And, I read that their new FA Center isn't a great blocker, so why did they sign him? Why not draft a better Center? IMO, being able to get to the second level is not more important than being able to block (run and pass) effectively.
It's very possible that Miami will be okay at OT this year, but Tua is going to be under constant pressure because of the middle of the line. If money is an issue, combined with Grier's inability to build a line through the draft, then maybe Miami should stop paying a huge portion of the salary cap to just a few players, and instead spend that money on buying a good o-line.