I'm sharing an abstraction that I did enabling visualization of unsupported objects in mira or miraweb - namely, bach objects.
It has some issues, like the fact that its core object - [jit.desktop] - doesn't work in 64-bit mode. It is intended mainly for visualization, but you can add simple user interaction through regular mira objects (e.g. mira.multitouch).
It is called pedrnun.miralizer and you can download it from:
https://comprovisador.wordpress.com/max-abstractions/A few more abstractions will come up as soon as I finish patching proper help files...