If he comes back this week (which is expected), anyone brave enough to venture a guess how things shake out in Denver's backfield going forward? I think Hillis has shown enough toughness and burst to remain the starter, but they might prefer him playing FB.
* The Broncos will bring in veteran fullback Andrew Pinnock for a physical today, and he's expected to sign if his surgically repaired knee checks out. Pinnock underwent microfracture surgery in February.
In any case in answer to your question, a healthy Selvin is an upgrade over Bell, and would end up with more touches. Hillis should still get the Majority of touches and goal line work.