Barring a strike, which i can't see happening any time soon, I think the next CBA will be similar to this with some carve out for teams retaining players. I saw a proposition back when the last CBA was signed by some analyst who suggested a cool theory where teams get incentivized to retain players and draft well. The basics were a team gets a discount on the tax configuration for a long term players salary. Every year after 5-6 years with a club then only a percentage of their salary counts towards luxury tax payments. Say Booker has been here 10 years, each year after year 5 gives the Suns a 5% discount on his salary toward the tax so they only figure 75% of his salary towards the tax lines. That reduces player movement as teams will want to retain guys to pay them vs new signings. I wish I could recall who came up with it because they detailed it well and it made sense from numerous perspectives.