It's going to be all on Dorsey this year. I see them wanting to have most of the WR able to play everywhere.
It's a unique and maybe a risky scheme, but one I can see working great if it's executed right.
The slot guy will be constantly changing I believe. Harty, Diggs and Shakir (and even Hines occasionally) should all get snaps there.
Lots of fans want a true slot, but I think this is the plan. I will be watching to see if I am right or way off.