Making the playoffs vs getting in the lottery:
Con: We lose the tiny chance at jumping from an early teens pick up to a high pick. "Stuck" with a late teens pick.
Pro: Making the playoffs arguably will mean that the trade value of all the players that Danny has on the roster that contribute to the run will be higher than if the team tanked. Since I consider just about everybody on the roster a potential trade asset, that means that the trade value of Smart, Thomas, Turner, Olynyk, Bradley, Zeller & maybe even Pressey (guys still under contract past this year) will be bumped up a notch compared to if we stumbled into the lottery. Even the guys not under contract (Bass, Jerebko, etc.) would have increased value in sign & trade deals.
Making the playoffs also means a significant wad of cash in Wyc's coffers, which eventually could mean the difference somewhere down the line when Danny wants to trade for or sign a big contract or two that puts us into the tax.
For the players NOT traded, sure - I'm sure the playoff experience together is probably better for their collective development than losing our way into the lottery. But I think that's less important to Danny than their trade value.