Reborn as The Hollow God

The next chapter will start the [Arrancar Past] arc, in this case, it will take place around the same time that Nelliel was deposed from the Espadas. I wanted to ask you two things in this case:

1. Do you want Ikomikidomoe as a Natural or Artificial Arrancar by the Hogyoku? and

2. Do you want the story to have pairs for Mc?

3°: Ikomikidomoe becomes a temporary ally of Aizen or stays in his own group?

And an extra: how do you feel about having filler characters in the story? I'm thinking about using some of the Zanpakutou spirits from the Muramasa arc as HOLLOWS!.

ps: Mainly Zabimaru (Chimpette and Snakey) and Hyourimaru.