I agree - with the AFL moving earlier to cater their extra rounds and the annoying FIBA window, I'd like to see the NBL finish up completely prior if possible.
Obviously stadium availability is a logistical issue - but putting that to a side, there’s a couple of options.
The first is to increase games during the rounds - NBL should double down on the festive season and have games each day and expand that a little - this is your 12th Dec to 5th Jan period.
Then there’s having 2-3 games per week rather than 1-2 games per week. I think players would prefer more games less training, 2-3 games would help ensure there’s at least a home game each week which is good for families because they want something they can take the kids to and get them tired! If you have 2 home games in a week chances are that’s a late week night game for the corporates and night out people, the weekend game more for the families.
If that’s not sufficient in itself, then you start a little bit earlier. I do think, and I changed my mind on this, they got it right starting GF week this year.
Ending earlier means more likely FIBA window availability plus players can have more time elsewhere to get that extra $$$