If they shot less and tried to put up higher assist numbers, they are more than capable of matching Rondo's assist average.
Again, not a chance. The only PG's I could possibly see averaging the assists Rondo does are CP3 and maybe a few other lower tier guys (i.e. Calderon etc.)
FWIW; here are the stats for Rondo, CP3, Deron Williams and Tony parker through their first seven seasons in the NBA. I left out Curry, Rose, Irving and Westbrook because they haven't hit that number of seasons yet.
Those seasons, very quickly, are 2002-2008 for Parker, 2006-2012 for Paul and Williams, and 2007-2013 for Rondo.
http://bkref.com/tiny/QGjAcInteresting to note:
Rondo's played the fewest regular season games of the four, coming in with 475. CP3 has 485, Deron has 506, and Tony Parker has 540.
APG:
Rondo has 8.3
Parker has 5.5
CP3 has 9.8
Deron has 9.2
Assist %:
Rondo has 40.9
Parker has 30.3
CP3 has 40.6
Deron has 42.7
In the playoffs:
Parker had played (and started) in 117 playoff games in his first seven seasons. Holy. Crap.
Rondo had played/started in 92.
Paul had played/started in 34.
Deron had played/started in 44*
*for some reason BBref has this bit capped at 2010--I assume because the Nets missed the playoffs for two years prior, though I'm not sure why D-Will's phoned in 2013 run isn't here.
Playoff APG:
Rondo: 9.2
Parker: 4.8
Paul: 10.1
Deron: 9.6
Playoff Assist%:
Rondo: 43.0
Parker: 25.6
Paul: 48.3
Williams: 40.4