I'm not discounting their draft, but they still have Rondo. If they traded him and let the young guys completely run the show their moves would make alot more sense. They're going to wind up in the same spot they were last season in a more competitive East. That's not the 4th "most improved" team in the league.
If you're talking about building around Evan Turner, you're in trouble.
Its not a most improved list though. Its a best offseason list. And they added some good assets without giving away anything important. 4th might be a little high, but they had a good offseason.
Imo not dealing Rondo while his value is low was a good decision, now he can come out and play well this year and they'll trade him by the deadline