Patrick Beverley
Tim Hardaway
Aaron Gordon
Reggie Jackson
Dion Waiters
Brandon Ingram
Lauri Markkanen
Marco Bellinelli
DeMarre Carroll
Jeremy Lamb
Eric Bledsoe
Will Barton
Ricky Rubio
Bogdan Bogdanavic
J.J. Barea
Darren Collison
Are over half of the #2 options in the NBA as we speak. Some of those are obviously debatable, but that's irrelevant because the other choices are guys who aren't any better anyway.
There are a lot of names on that list who are no better than Oladipo. I can pick out about 5 playoff teams with a #2 who is no better than Oladipo. A team build around defense, rebounding, and a strong primary ballhandler/scorer could certainly use Oladipo as their #2 option and succeed. Lebron would have loved to have someone like Oladipo in 2015.
p.s. - where the hell you get "4th option" from? The 2016 Warriors who set the season record for wins had fukking Draymond Green as their #3 option on offense, and lost in the Finals to a team whose #3 was a concussed and ineffective Kevin Love. And Oladipo isn't a spot-up shooter, he's a guy that likes to create off of the dribble and movement. Why would you drop him to #4 when there's clearly ways he could fit as a #2 or #3 on a good team?