Most of that hasn't "been tried". Inherently starting Murray all last year was actively not trying to put guys in places to succeed. Offensively challenged players "finally feeling free" to suck it up isn't "trying it" either. Most good offenses actually have a lot of structure. Look at what GS and MIA do for examples. It's not old-school thinking that you build a system that works with your best players. Throwing up your hands and going, "I have to get rid of LMA and DMDR because they don't fit" isn't doing anything, especially when you don't follow that up by getting rid of them.
I also don't think it makes sense to blame IQ for this. DeRozan ran a decent offense in Toronto. Aldridge has been part of good offenses as well. Guys like White, Mills and Gay should fit fine. I think a lot, lot of folks don't know the first thing about how the "beautiful game" offense worked. They think it was all this passing and movement without considering that all of that was predicated on an offense that has a bunch of built-in options and contingencies. Guys were able to make all those passes because they could trust that the receiver would know where to be. It's not like that's in this offense and guys aren't using it. It's not there at all.
I would agree that Leonard, Aldridge, Gay, DeRozan and now Murray could be resistant to having to "think" and pass in situations where they think they can score. That could be an ego problem. But it's then up to the coach to tweak the system and sooth the personalities to make it work. He shouldn't abandon structure and put together bad lineups and basically throw his hands up on development. Pop's one of the most powerful people in the NBA. He doesn't have to take from his rookie guards.
I think people need to let go of the bubble. There are certainly some good things to take from it. But it's not a good model for team over a whole season. From playing small to relying on guys like Johnson and White shooting unsustainably well from three to the slew of teams who didn't really care about winning games. You don't abandon your best player(s) because you had a good seven-game stretch.