Orlando had a great draft. Ro and Oladipo both have superior intangibles and work their butts off. The locker room gained two big-time leaders and even if they lose Afflalo and Nelson in the next couple years, they're positioned to make gains on the pack in the East.
As far as where Ro fits on the current roster... well. Presumably, Tobias Harris exits camp as either the starting small forward or the sixth man. If he's off the bench, he should be considered a premier stretch-4 (otherwise, he'd have the stamp of approval to start at SF). Since that stretch-4 is probably Osby's comfort zone, he'll have to play a Carl Landry/Luc Mbah a Moute type D-and-boards-while-undersized role. He's got the grit and athleticism to make it work, I think.
Otherwise, if Harris starts at the 3 and Andrew Nicholson and Moe Harkless fight it out to start at the 4, Ro COULD win minutes at the 4 off the bench, taking elbow jumpers and crashing the boards. He's a different look than Nicholson and more fundamentally sound than Harkless. Maybe Rob Hennigan, the vet of Sam Presti's system, sees him as a cheap analogue of Nick Collison. In which case, that's just perfect.
Good luck to the man in the Magic Kingdom!