Anon, 95% of players in ABA leagues are locals, only the highest paid players can move interstate, and even then it's only really on the back of an NBL contract.
If not just the state then how do the leagues match up?
SEABL is #1 and Victoria is the hub, but this is how i'd rank the other leagues.
2. Big V
This was considering not just the few strong teams each league has but also by comparing the 4th or 5th placed teams in each league and the bottom few teams in each.