"Moore isn't the issue, BUT he is the only piece that can be upgraded in an NBL season"
(Unless you are Sydney)
This is true, and normally I would agree with this logic, if it were a case of upgrading one player who was bound to go any way, and challenging for the finals.
But firstly you have to consider budget. How much is he being paid, and do they have the money to go much better? I don't know, but I would guess that he could still be good value for what they're paying. Adelaide obviously stretched the budget when they dumped Taylor and hired Randle, so how much ore have they got in reserve?
Secondly, even a Cotton level player isn't going to catapult them into finals contention unless a few others step up.
This isn't going to be Adelaide's year, so what they need to do is get their young locals back on track, and keep developing them. Rebuild that Local core.