Aye, but there's progress that is achievable. For Foster, he should be looking to nail down one position in the AFC team as his own. I'd also love to see him cut out the aimless passes towards the 18 yard line from full back, they do my fucking nut in.
On a practical level, there are also at least half a dozen players that would play at RB before him (rightly or wrongly). Off the top of my head, Hutton, Whittaker, Dailly, Broadfoot, Wilson, Neilson and Hart spring to mind.