I don't think Jokic went too early - he's an intriguing Swiss Army knife in this league. But offsetting his poor D requires some care, and it would be nice if he shot better from 3.
I actually seriously considered taking Jokic at the turn because it would be a hoot to play with the flexibility a Wilt-Joker frontcourt provides, but I couldn't bring myself to do it. And as it is I'm content for now with the opening trio of Chamberlain, Billups, and Klay. I've got my 3s, most of my ast% for the starting lineup, offensive spacing, a good start on D and usage, and ridiculously low PFs so far.