For what it's worth, CelticsBlog.com rated Romeo Langford 12th overall:
I have a bad Romeo Langford habit I just can’t quit. I see his shot mechanics and 27.2% 3-point percentage, but believe in his touch translating to passable 3-point shooting eventually. I see bad off-ball lapses in which he surrenders back cuts for uncontested layups, but believe in the occasional out-of-area play he makes around the rim thanks to a spark of defensive awareness. I see plenty of missed passes, but believe in the occasional pocket pass to the roll man or kick out while attacking a closeout.
Langford has considerable flaws. Most damaging is his shooting (if I could pitch the optimistic point of view on that, he has amazing touch and was 65th percentile in the halfcourt on off-the-dribble jumpers, proficiency which likely stems from his preference to shoot with backward momentum). But his strengths are real.
Langford’s an awesome on-ball defender with excellent physical tools (height, length, strength). I expect him to be a very plus on-ball wing defender with legitimate positional versatility.
As a slasher, Langford’s powerful. I’m concerned that he won too much with strength and not enough with his handle or explosion, but he should be strong even by NBA standards, and he knows how to apply that strength to dislodge defenders at the rim and create space to capitalize on his elite touch.
I have a suspicion Langford has some semblance of athletic upside, too. Langford subjected himself to every anthropological measurement at the NBA combine except for weight and body fat percentage. My guess would be this was a not-so-subtle attempt to hide the fact that he’s a bit chubby.