D'antoni would certainly be the most plausible candidate, even if his time working for the Sixers feels like ancient history now.
It's basically a repeat of the Flyers and Phillies, though Brown was certainly not an inexperienced guy (and has been here forever). But when you make a move partly for PR reasons you need a coach who gets headlines and has the resume. Even D'Antoni, never mind the issues with his system, hasn't ever made the finals, let alone won.
I wonder how much of a hand Brand had in hiring Udoka, or if he was purely Brown's guy from the San Antonio connection. Also, especially after yesterday's headlines, they should hire or at a Black coach, or at least seriously consider several.
Still think losing Ben and the pandemic gives them some cover. What do they really need to worry about, season ticket renewals and group sales? And while ownership isn't crying poor like Middleton (obviously the NBA didn't lose money this season like baseball will) he does have two years left on his deal (though of course it's peanuts compared to any player).
The real question is do you trust Brand to overhaul the roster yet again, and can he ever do it? Also, the series isn't over yet.