The only way to make 31 work would be to pull a Torchwood
on it - burn the whole thing down, clean it out, and start over again. And even then it would need to be under somebody's purview and face a lot of criticism. And Star Trek just isn't the sort of world where Torchwood/Buffy/Angel
/etc. storytelling fits.
Also, there's no good reason for Dax and Aventine
to be involved; let them have their own adventures. Especially given Ezri's latest encounter with what secrets do to a society, she's the last person who should be sanctioning 31.
I do like the idea that somebody had upthread of a "reunion" book - 2013 will be the 20th Anniversary of the show after all.