I also have not been able to connect using miracast. For me this problem started with SENSE 5.5.
I was using maximusHD rom v14.0 with jb 4.3 and sense 5 with working miracast (with updated firmware).
On any newer roms, miracast does not seem to work, except google edition roms.
I also just tried the latest AndroidrevolutionHD rom, v51, based on the latest official HTC ota, but no luck.