I think that is obvious that the slain theocracy(TST for short) will become bold and play a mejor part in the next book as well as the struggle between the elves and TST. The black scripture will play a major role in these events. Ainz-sama will obviously support the elves indirectly at fist then gain support by showing his power and compassion. The kingdoms will have a few chapters but I think that because Ainz kicked the living crap out of them he knows it’s a matter of time befor they become vassles. The black elves I feel are tertiary At best an de will play no major role in the upcoming vol.