I am getting really close to finishing up a MacMESS release. I feel when Raphael see the release he will be very unhappy. I took out imgtool support, and natural keyboard support.
The current binary is really solid, and worthy of releasing to the community who have waited far to long for a release. My plan is to quickly finish up the remaining issues I have, then release. Then fix any issues that come in from the user community, update to the latest MAME/MESS versions add back in natural keyboard support and do another release.
Then my goal would be to write support for the new MAME debugger. That is, after all, the whole reason I started on this path!