I agree that it's risky & an overpay. I also agree that Burks could wind up as good as Hezonja, but the reason I'd do that deal is fit. Burks is likely a solid 6th man scorer who is limited defensively. Hezonja, imo, not only has the potential to be an elite shooter & scorer, but also has the potential to be at worst an above average defender. He does have some risk, but if we are ever going to become a championship caliber team, I believe that we will need another scoring threat alongside Hayward. Hood could become that guy (or at least close to it), & Burks is a very good scorer in his own right, but he needs the ball in his hands to do so (which makes him a poor fit alongside Hayward imo) & while he improved last year, he will never provide the level of 3 pt shooting that is necessary in a lineup of Exum, Hayward, Favors, & Gobert. Imo, this makes him a 6th man on the roster, & while I am hopeful that Hood eventually becomes that 5th starter, I think it makes more sense to double down (while also adding insurance in the event that Hayward opts out in 2 years & leaves or isn't worth the full max) than to settle for a complementary backup. I understand being reluctant to take what could be a step back & #12/Burks/Booker for Hezonja/McRoberts is an overpay, but I look at is as trading three likely (depending on the draft pick) role-players for two (current) role-players (1 of which has the potential to become an elite scorer). I like Burks a lot & think he could be a great 6th man, but we were successful without him & while Booker did contribute to that, McRoberts should be able to do so as well.
I understand not wanting to take a step back or overpay, but swapping a 6th man & probable backup (which is what our options currently appear to be at #12) for a player that has the type of potential that Hezonja has could be the difference between winning a title & falling just short as we have in the past. Also, I don't know DEN's cap situation, but even tho I think Burks' contract will eventually become a steal with the cap increase (as will McRoberts'), if the Nuggets could take his salary it would give us a lot of options in FA & the ability to fill the need that we would likely be drafting at #12 (backup big) as well as other holes. It's a risk worth taking imo.