Not D$ but I'm happy to join the discussion if that's okay. Burns, until he proves that he can stay healthy for more than half a camp, isn't worth discussing right now. It's a **** shame because of the RBs we signed last year he's the most physically gifted, IMO. He just can't seem to EVER stay healthy.
Lingard I think will play this year as a 3rd RB (or 2nd depending on where Deejay Dallas lines up on any given snap) I think Homer has earned the right to be "the guy", but Lingard will definitely get plenty of carries. Richt likes using a stable of backs and I think with Homer, Dallas, and Lingard we've got the talent and depth to really start doing some damage in the run game. As always with the young guys, it'll be about how quickly they pick up blocking schemes.
If I had to rank our RBs in terms of "playability" (i.e. how much I think they'll play), I'd go:
1. Homer
2. Dallas
3. Lingard
4. Gray
5. Davis
6. Burns - unless a miracle occurs and he stays healthy, then I'd put him at #5.