source: https://twitter.com/ShamsCharania/status/1266445710196695040
https://www.cbssports.com/nba/news/nba-discussed-four-potential-formats-for-return-to-play-during-board-of-governors-call-friday-per-report/
I say go for that 4th plan which is 72 games to give chance to those who are in lower seeds.
In that case season might be longer, but that could be sorted by making playoff series shorter , maybe best of 5 series could be a solution. If players need standard break after the season, next one could be made shorter, like in those lockout cases. That way next season could start at the end of the year, giving players enough time to rest and recuperate. Just throwing some ideas around..