I tried to watch a quarter of the Fakers/Warriors.

It's just boring. Get rid of the three point line or cap the amount you can take. Make the minimum age 21. That solves most of the problems.
I don't disagree about the problems you identify with your solutions. They'd have to ban the 3 for a generation to reset how kids train and how coaches plan, though. Maybe they could limit 3's to only counting in the final 3 minutes of each quarter or something. I'd say push the line back a foot or more but these guys are hitting 28 footers these days.
I think the real problems are culture- related issues that won't change without a new commissioner. The players don't give a shit about winning or the fans. They only want the money and a social media following for their podcasts.