Maybe... but I'd like The Soul Key to focus on bringing a certain someone back... I'm sure you can all guess who... and maybe fixing the currently insane person who is causing the problems... because even tho an Emissary could help the Bajorans of the MU- if they listened- the "practicing" ones are all underground the rest of that universe is in shambles.
I'm not sure how well Odo and Laas will do- given how they disagree on everything. Laas can't be left to his own devices, but Odo's desire to return to Kira must be getting very strong. I would imagine something may eventually come to reunite the Founders in our universe. Given the "evil" in the MU, and how Odo seemed to be doing well, it seems possible the "solids" in the MU didn't react with such hostility to the Founders- so maybe we'll see "free" Jem'Hadar? That would be awesome!!
I really want to know how the Ascendants will fit in to all this, given how they'll affect both the AQ and the GQ...