Adam Silver seems pretty determined to get rid of the OAD rule. Consensus seems something like 0-and-2 could be coming, where a player can go pro out of high school but if he goes to college he has to play at least two years. Baseball already does this, though there the rule is 0-and-3.
I think the frustration on the NBA side is that it's hard to evaluate 19 year olds playing against uneven competition over just a 3-4 month window where the majority of the players they go against are way less talented. Also sometimes a guy's best use in college is way different than the role he will play in the NBA, so they aren't even developing the skills they need. NBA teams would rather have them in their development systems, or at least have a longer window to evaluate players and less yanking them around between systems.
Some links if you're interested:
https://www.si.com/nba/2017/11/17/adam-silver-michele-roberts-ncaa-officials-one-and-done-draft-rule
"Silver is reportedly considering proposing a change that would allow players to enter the draft out of high school but force them to remain in college for two years if they do enter school. It would be a similar standard to the one in place for the MLB draft; players are allowed to turn professional out of high school, but must remain in college for three years once they enroll. "
http://www.slamonline.com/nba/adam-silver-expects-one-done-rule-change/#MsMgwdBDAVdIQP8O.97
"NBA commissioner Adam Silver says it’s “clear a change will come” to the League’s “one-and-done” rule for the Draft."
"Silver, for his part, cited three things that have dramatically shifted. The scandals are one. “It’s clearly not working for the college game,” Silver said. Second is the increase in one-and-done players declaring for the draft. There were 16 last year. Silver said the average had been about eight per year.
What’s really interesting to me is the last two No. 1 picks in the NBA draft, Ben Simmons two years ago and Markelle Fultz last year, both played with teams that did not make the NCAA tournament [LSU and Washington, respectively],” Silver said. “And I don’t think enough people are talking about that. That seems to be a sea change."