Evennia is a great way to go. Since it uses Python it can pretty much do anything Python can. Excluding anything in Python3.
Also Python is a much easier concept to learn then the old outdated MU code.
The index is a good way to find out which games are being developed. Arx being the current one that's past the pre-alpha/alpha stage.
If you want to discuss more, you can also login to connect.deepshadowsmush.com and ping Bremen. I can talk to you about development on Evennia as well from a person who knows nothing about programming and how much easier Evennia was to do.