Brining Back Some Canon's

Halilbel: What happened to her in the Bleach Anime AND Manga is pretty vague. All we witnessed was her taking a very severe slash to her body from Aizen and falling into the ground. I believe that just from that vague scene it is possible for her to have been laying low the past few hundred years after that fight and getting stronger. It will be up to whoever RP's her to decide the final route.

Yammy: Yammy could have easily came up with some patch work from a humble scientist known as KJ Yunashi. I believe KJ would gain a peak interest in Yammy at the time to see if he could profit from such a beast. After all, at the time, Arrancar's were relatively a new threat and KJ is the type to typically wait in the shadow's until he strikes. In fact, from KJ alone, he could have helped perfect his powers since this was the case with Shadin Yuudeshi and Radioactive; two heavy juggernauts of this site. If anyone is interested in bringing him back, we can work something our or find an alternative.

Baraggan Luisenbarn: Since Baraggan's powers were modeled heavily around death, I was thinking of adding him into the Demon World/Touketsu plot. Possibly having Touketsu or Mana bring him back to serve Sin Fall and Nuevo Espada for their own purposes. If anyone is interested in this, post it here.

Nnoitra Gilga: After his fight with Kenpachi, it is very possible that KJ could have also collected his body and revived him in order to make him stronger. Like Yammy, he would be able to do whatever he wishes and join up with the Nuevo Espada even, but must remain loyal to him and be available whenever a favor needs doing.

As for all other canon's, if you got one you wanna see, take an interest and try to make one. This is just to get some discussion going. And with Sin Fall back in business, it's also possible for them to revive their bodies for Nuevo Espada as sign of partnership.