Might have to do with the way you fly aces. The cagey, hit & run method gives
lots
of time to replenish that force. If you're staying in the tussle then that makes for a much more fun game for both players IMO, but bad play experiences are acceptable and even admired in the competitive world.
IMO ion isn't the guaranteed counter-play it's portrayed as. Ion has to land with at least 2 uncanceled hits/crits before it matters -- that's hard against the cagey aces playstyle (when you do get a shot, it has to dig through solid defenses). It's only a hard counter when it takes . And in my experience, when you do get the perfect ion shot in, you still have to manage to killbox and kill the ship (which is harder than it sounds, and opens you up to the list's other aces in the process); if it gets away it can regen 2 shields and often get out of half-points territory while its allies finish you off. Force plays to this playstyle really well.
I'm interested in seeing whether jedi stop feeling so strong when shield regen is priced higher, or simply taken away from them. That wouldn't take the incentive away from playing super-cagey, but it would take away a large advantage to that playstyle. Now you're regenerating force only as you skirt the battlefield, not also shields. Now that killbox that almost killed you still matters.
I'm interested in why jedi didn't do so well in worlds. It could be bad matchups (did really well, then faced really tough opponents and dropped in rankings? might have really high SOS), or fewer people flying them due to burnout or fearing hard counters, or there might be an unexpected weakness against the lists that floated to the top, or maybe the really good players decided that it would be a larf to take scum as far as they could. That last one appeals to me because that's my approach to tournaments.
But if we can draw any conclusions from worlds that almost nobody with disagree with, it's that jedi will drop in price and scum will go up in price. President Snow is not happy.