Since smallies are "natives" as you mentioned, I believe DNR thought process is if conditions are right, they would take off on their own. As you mentioned, they do seem to be expanding slowly as more rock is exposed, so might just have to wait a bit more on the developing fishery. That said, a "shot in the arm" would be nice. Might want to drop in on the Indiana Smallmouth Alliance (www.indianasmallmouthalliance.org) guys and see what they know or could do to help.