I'm getting deja vu with this chat about the skipper. I remember a prolonged debate on the old board about Jim Troughton and whether he was worth his place. I think he had more to worry about than Rhodes.
I like the fact that Rhodes bats at 3. He would probably do better if he batted lower down (remember the "safer at seven" campaign for Jimmy T?), but he puts himself in a vulnerable spot thereby taking one for the team. It's not obvious to me that there is anyone in the seconds battering down the door to take a number 3 batting slot, so well done to Rhodes for the time being. It would be nicer if he scored more heavily but I don't see him as a liability yet.
With the arrival of Barnard, Rhodes' bowling is of less value but it's still there. His other plus is that the team look happy, implying that, as captain, he's doing ok. There have been plenty of times in seasons gone by when the team have looked positively grumpy. Unless we are sure that a replacement captain would manage to maintain a good atmosphere, let's not rock the boat just yet.