Chris Mannix on the radio was saying the NBA would prefer some sort of shortened season before starting up the playoffs, if the resume play this year. The reasoning being if they will be returning after 4-6 weeks, or more, that the players would need to play some games just to get back in shape and prevent injuries before getting into playoff games.
At some point I think they will need to set up a final decision date on calling the season. Not sure when that date would be but at some point, to not risk next season, they will need to call this season. I think a date in May will make sense. If things aren't looking good by then, call the season and start planning for the draft and next season.