I mean in a bubble if the season was over right now, I'd say I'd gladly trade Avery Bradley + Jared SUllinger for their unprotected 1st. Getting top 5 talent in the draft is how you build a contender. There's no way Bradley + Sully is worth a top 3 pick normally.
But then... would you even have the guts to do that 1/4th of the way through the season? Say they follow up that move by trading Okafor for a SF like Tobias Harris. We got Thomas for a late 1st last year... PHilly has two of them (Miami and Okafor)... say they trade those two picks for another rotation player like Goran Dragic. Within a day, they could have a roster of Goran Dragic, Bradley, Harris, Sully, Noel with a bench filled of guys like Covington, Wroten, Canaan, Grant, Stauskas... say they flip some of those young guys for vets who can contribute like Luis Scola. There's 3/4th of the season left to play... is that enough for Philly to win some games and finish above the Lakers, Brooklyn, etc?
Say they decide to trade their top 3 protected Laker 1st (2017 unprotected) + a handful of young players and future picks for Cousins mid-season... Say the team plays .500 from here on out... It's unlikely, but not impossible.
Who would trade for their pick right now? You never know what they will do afterwards. I wouldn't trade for their pick right now. So I imagine they will not get fair value for it in December. So nothing will happen... they'll tank the rest of the season and deal with their gold hoard in the summer.