me too, I am searching and searching without luck to find the Xposed hack against intel arm V8a x86_64 Z8500
If I knew, maybe, I would never bought this pad, thou it is a great pad, With DualOS and good speccs.
Only people in xda-developer forum could develop it and port (I think) ... Maybe you could raise your question in that forum. In Vietnam, Pakistan and China, I not sure, but maybe they never heard of xposed framework...
Xposed Framework for Mipad2! would make Xiaomi MiPad2 the greatest tab in the human history ever in all eternity.