I'll start by suggesting that no game other than one pocket should be played on pockets tighter than 4 1/2".
I'd be fine with a switch to ten ball, but who cares?
In the four major nine ball events of 2006:
Derby City was won by Ralf Souquet
The BCA Open was won by Ralf Souquet
The US Open was won by John Schmidt
The WPC was won by Ronnie Alcano
Nine ball in its current form has the cream rising to the top, and is producing very worthy champions. The last few world champions in nine ball were Immonen, Strickland, Hohmann, Pagulayan, Wu, and Alcano. Enough said.
Still, I say let's lose the jump cue. Won't happen, of course, as it will cost those who manufacture and distribute them (many of whom support pro pool) some sales, but let's overlook that for the moment. The jump cue has, on average, reduced the penalty one must pay for poor position play. In my opinion, if you snooker yourself, you should pay a stiff penalty, just as the old masters did. True, they could push out in the middle of the rack and we can't, but the bottom line was that any advantage they enjoyed prior to running out of position would be wiped out completely. In old times, those who launched the cue ball into the air were deemed inept and laughed at, and that's as it should be!