The flying thing honestly is blown out of proportions. He will get used to it and there are pills for these things.
lack of consistent shot , though is something to be worried about. In college he bulldozed quite a bit of his shots in, but in the nba, he won't have this luxury.
It will be a risk to draft him. Either he will score 8 pts, 5 rebounds, 3 assist and be a very nice bench player or could be another rondo 15 points, 8 rebounds, 7 assists near triple double machine starter