Are they really jewels though? None of those RBs has been greatly effective because the oline play has been poor. Gurley isn't going anywhere either (risk of injury aside), so you're looking at Henderson/Brown as what? You really want to own both sides of a handcuff for a guy who's still likely to be getting 50-75% of the snaps?
Sanders is in a better situation than Henderson I think. He's more likely to replace Howard than Henderson is to replace Gurley as the lead back. But, talent wise? I don't know that either guy is particularly great and could see both Rams and Eagles looking for RB in the next 2-3 drafts anyway.
So to me the question is just if you think Henderson is a rare talent or not. I don't, I mean he's fine, but he seems unlikely to supplant Gurley and then become something close to what Gurley was, even if the Rams fix their oline issues. I don't think Sanders is a great talent either, but there's no one really important in front of him, so either he passes Howard on the depth chart eventually, or the Eagles just move Howard somewhere else anyway.
I just thought of a question in light of this, mainly playing devil’s advocate. You noted that you don’t think Gurley is going anywhere. Is that a safe assumption? Yeah, that’s a burden cap wise for someone, but maybe they know more than anyone else and that’s another reason he’s been limited over the course of the season. If he’s gone, doesn’t that change things?