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Having left the whole franchise in the rear view mirror long ago. The Rick/Michonne spinoff news doesn't make much difference to me. It just seems like a desperate hail mary from AMC, with the logic being they know all they've been doing is throwing crap against the wall to see what sticks with all the spinoffs. Now they hope bringing back the title character from the pilot will be enough to defib interest. Perhaps in a limited, final run, etc people might be curious. Yet to be tone deaf to flesh it out into another long winded, stale series like everything else is enough to tell me they have no plans on winding down the franchise.
It would be the same thing with the rumored John Snow sequel GOT series. A limited interest in a post GOT world, but of course I believe HBO is going to find out the hard way that they burned too many bridges with GOT fans over the last few seasons of that show. In consequence, House of the Dragon will ensure a John Snow series probably never happens.