Lots of various opinions about Bell. First, Bell isn't indecisive. But, he is smart enough not to run up the back of an OLman who is getting pushed into the backfield. I don't believe Adrian Peterson could run well behind this OL.
As for the OP...yes Bell's hands give Ben a huge weapon. Haley needs to put Bell into the slot at times...split him out and get him in space. Sitting him behind that OL is a waste of his talent. I read a scouting report that stated he is a good enough receiver to play the slot. Bell is a beast when he has a little wiggle room. It's why his receiving numbers are good while his running numbers (along with all the Steeler backs) are suffering.
Until the Steelers find guys who can provide at least some creases in the running game...the running game will be questionable at best.