Agree that Leggett is probable BB starter.
Snoddy and Andrews will be your AB starters.
#2 BB is key because it's hard to stay healthy all year and that's some tough sledding when we have back to back death marches. I think it will come down to two things: ball security and blocking. Running ability virtually never determines who gets the nod. QW definitely has an advantage getting to go through spring, but MLD has SO much talent and looks very developed physically. Kirvonte Benson is another that will get a look at BB - very physical, good balance, and runs behind his pads (also is Snoddy fast) but might be a bit small, has a legit shot at one of the AB spots. Just have to see where he fits the best.
#3-4 ABs are also a big deal. Even though it seems like we have way too many ABs, you need a lot of capable guys as Bostic really struggled blocking FSU. KB may get a look at AB, very similar to Snoddy physically (that speed would be sweet at BB though). Nathan Cottrell is possible, AJ Gray could get a look at AB, Omari Jaharett is an AB, just have to see who picks up the blocking in space the best. Other options are some of the QB/WR/DBs who might switch to AB if they won't get on the field at their recruited positions.