Certain problems with the current CBA need to be fixed in the next one. The first change is in how the salaries are computed for the salary cap. Currently all compensation is added up then divided by the term to determine the Average Annual Value and that is what counts against the cap. Dumb. Make it simple. With most multi-year contracts, the players salary increases. The player's cap hit should be whatever his actual salary (and any signing bonus) is per season. His salary increases, so does his cap hit.
The other change the players will fight, but it makes sense. If a player has an NTC of any kind and demands a trade, the NTC is cancelled. Teams offer, or agree to, an NTC to offer the player a certain amount of stability and, in the case of modified NTCs, control over where he is traded. When he demands a trade, he is cancelling that stability, disrupting the team's plans (which included him) and reneging on his implied promise to give the team his best for the duration of the contract. Such activity should not be rewarded by the team being forced to trade him where he wants to go. When the player demands a trade, his NTC should be null and void.