Fantastic show -- I actually remember Art Fleming hosting this, so I'm old. Alex was awesome and will be missed (related RIP today for Norm McDonald who spoofed Burt Reynolds on SNL's Jeopardy parody).
The replacement process was drawn out until it finally imploded under its own weight. It's just another reason why 'we can't have nice things' without agendas playing out. Sony just should have named someone from the start.
But at this point, I think it's time to shut the show down as indeed Alex was irreplaceable. Maybe retool/rebrand it - and bring it back at later time.