I think he can be a good starter, but I actually worry about the opposite problem the OP worries about.
I think Rondo and Bradley are a bad match, because neither is a plus scorer.
I think Rondo pairs much better with a great spot-up shooter (I won't name any examples, but one springs to mind).
And I think Bradley would be better paired with an offensive-minded PG like Rose or Westbrook.
No championship team in the modern era has won with a backcourt that lacked at least one good to great scorer. Neither Rondo nor Bradley fits that profile right now.
I agree.
As they are now, Rondo and Bradley can share the floor together in necessary instances, but shouldn't in what would amount to starters' minutes (35+mpg).
Rondo should start next to a SG with scoring ability. Bradley should sub in at SG when we bring a more offensive-minded PG in (Terry is the closest we have at this point).
It is possible for Bradley to continue progressing on his spot-up game and corner-3s. If he does this, then starting him next to Rondo wouldn't be such an issue. He's still a young, developing player.
Remember, Bradley was coming along nicely off-the-ball before Rondo went down. Bradley's offense is suffering now because he's being asked to facilitate the offense coming up the court, then swing quickly into his developing spot-up and corner-3 game. It's an odd mix for the kid.
Then again, this would all be moot if Rondo actively searched for his own offense each and every game. He can get to the basket as good as anyone and his jumper has grown leaps and bounds. If Rondo is actively pursuing offense, then pairing him with Bradley isn't a liability, especially with Bradley slashing to the basket and spotting up in the corner.