Well.. I am not against that strategy. But Australia is a small country and the total population is around 1/10th of that of some of the Indian or Pakistani provinces. In order for the BBL to become financially viable, they need to attract viewership from South Asia. Indian players are banned from taking part in the BBL, so that option is tricky. But they gained a lot of viewership in Pakistan, because a number of Pak players are representing various BBL sides. A compromise can be reached, and I guess 3 is a more suitable limit instead of the current two.
Indian players are banned to take part in any league not only in BBL, this is only BCCI arrogance nothing else. Those players who can't play IPL must be allowed to go out and play other leagues to earn money.
Unmukt Chand became first indian to take part in BBL. He signs for the Melbourne Renegades. May be we see more Indian players joining BBL.
https://www.cricket.com.au/news/melbourne-renegades-bbl-big-bash-league-first-ever-indian-player-unmukt-chand/2021-11-04