I think, to a certain extent, you're evaluating Rondo based on how well he fits into the traditional role of a label that you're giving him. Most "franchise players" are the focus of their team's offense and the leading scorer of their team. That's not really his role in this offense, and the big three don't fit into the role of most role players.
Not really. My mold of a franchise player is "someone who will make stuff happen for you when the game is on the line". This may mean scoring, setting up other people, or making key defensive stops.
Unfortunately, while Rondo has carried the team in stretches over the course of his career, I can't describe him as a franchise player under this definition until he takes his game a notch up. This may mean extra scoring, making an otherwise limited offence tick, or providing consistent effort on the defensive end -- I really have no blueprint.
But I haven't seen any of these work for him yet. When you have a 2 point game in the middle of the 4th quarter, do you really sit back and think "Rondo will win this for us?". I don't.
Of course, it's a valid point that "it's not just Rondo's fault". In which case we have to stop and recognize that he's not that guy -- and trust me, this will be way more important in the coming seasons when his supporting cast will not consist of three future hall of famers.
"Future hall of famers" is a great have your cake and eat it to phrase that you always see here. In one sentence, they're a better supporting cast than anything you expect him to be surrounded with in the future. In another sentence, they're aging troops and anything you get from them is gravy. LeBron, with his 30/8/8 this year, is a future HOFer. So is Kidd, clocking in at 5/4/5.
Not really. I'll try to explain.
I'm afraid that as aging as they are, our big three, this season, are a better supporting cast than Rondo may be able to get for seasons and seasons to come. This still doesn't mean that they can carry the team on their backs. So yes, if their heroics win you a game here and there that would be great. But we'll be looking at Rondo first every time.
The problem is that people are basing their assessment of how good Rondo is on the past 3 seasons when the Big 3 was distinctly less aged. So yeah, he was great in wreaking havoc when other teams had to worry about Pierce, Garnett, and Allen. However, we're clearly seeing this doesn't work night in and night out anymore. And Rondo still hasn't figured out how to win games for us under these circumstances.