The best Iggy can be is a Pippen, not a franchise guy. Problem is you can't be an effective Pippen (not saying he is Scottie, just making the analogy) without a franchise guy. Ditto for Brand. Franchise guys have to produce every night, be capable of dominating games for stretches and be considered obvious all-stars. Some, like Nash, don't have to be dominant scorers if they can do other things in a dominant manner. Here would be my list of franchise, and near franchise players, in the game today:
LeBron James
Kevin Garnett and Paul Pierce - at their ages/stages they can be franchise material when needed, not all of the time, hence they are a franchise pair.
Dwight Howard
Joe Johnson - near
Dwayne Wade
Chris Bosh - near
Danny Granger - near
Kobe Bryant
Chris Paul
Yao Ming (no, not Tracy McGrady anymore, Ron-Ron is closer)
Tim Duncan
Amare Stoudemire
Steve Nash - was, slipping
Deron Williams - near
Brandon Roy - near
Dirk Nowitzki
Carmelo Anthony - not quite, but easily could be
That is about it for me. Young guys like Derick Rose, Thad, Speights, Mayo and Durant are on the way, but not there yet. Boozer is another Brand. I don't thing Beasly ever makes it as he looks more like Glenn Robinson than anything. Anyone in GS can be a franchise guy for a night, but none do it consistently. Arenas and Iverson are no longer dominant because of age or injuries. Am I missing anyone?