I fell asleep.  Okay, so.

Clockwork world.  Medieval Steampunk.  More Steam than Punk I'm guessing, since you mention kingdoms and such in an upbeat, vibrant world.  This seems neat!  Much of what I've read of your other RPs makes me think this will be more optimistic and cheerful, which is cool.  World on the brink of death, being overwhelmed by unearthly creatures and unimaginable evil, etc. etc., but with Mushi-shimon!

I'd assume we're expected to each catch more than one mushimon?  I've had a character type I've wanted to use for a few years, but it's more like a human and his pet robot buddy.  Will we all be human?  I mean, we'll be technically undead (reliving?), but will species play a part too?

Will the characters remember their pasts?  Will they still live at home, with the spouse and kids, eating dinner with them every night, but maybe on a special diet of ethereal essences?  Or will it be a top secret government conspiracy, giving everyone new identities and sticking them in a sort of witness protection?

How many evil factions will there be?  Obviously there will be other groups, guarding shards and whatever temples they're housed in, like you said.  You mentioned various cults cropping up over the years; is there one unified front attempting to obtain the pieces of the dead god, or various groups at war with each other to see who can rule the world first?  That could be neat.  

Um.  I think that's all the questions I have so far.  I'm going play more games.