I completely disagree that he hasn't done a whole lot thus far. He has provided every bit of width we have in attack -- the only player who has even tempted any defenders out of the middle. He doesn't have nearly as much space to do that as he has in recent years, which is probably due to Baines being out and no real equivalent threat on the left side so defenders can cheat on him a little more.
Being an attacking right back on a team with very little width is a thankless role. I don't think there is anyone else out there who could do it much more effectively, though.