User blog comment:B214/Volume 22 spoilers/@comment-82.48.158.172-20161109231053/@comment-30048084-20161112185943

1) Sona would never trade her pieces even if Bennia wasn't her first choice, Sona is a tactician she wouldn't make someone an evil piece if they do not suit her style of combat.

2) Implanting a jewel containing the spirit of an evil dragon into a sacred gear especially an artificial one, one cannot even begin to imagine the side effects to the both it and it's wielder.

Elminhilde will end up a pawn the question how many will she consume

In regards to Lint I think Incinerate Anthem would exorcise her because it is a holy relic.

I think if Ishibumi were to give Issei a mutation piece it would be a pawn or he could give Issei multiple mutation pieces and it can be said it is the influence of [DxD] G being released after becoming a king.

I however doubt Issei will get any mutation pieces after all the strength of pieces is affected by the strength of the King and a I guess Dragon Demi-God will make Issei's pieces fairly strong or at least substantial higher than any other rookie king.

I think Issei's peerage is going to be made up of new characters from different mythologies. I just wonder what though he destroyed the Yuki Onna(Yeti)(unless there are ones that remain bishoujo somewhere) but maybe he will make some other beings into bishoujo that aren't for the sake of Issei's peerage.