The reason I like #Evennia for #MUDs is because it is a server project where all the components are just that. It isn't all one big blobby thing with an unusual copyleft license.
The biggest shift I'd like in MUDs is dropping telnet. That is a showstopper for most mudlibs/engines/projects/whatever.
The same way we ought to have BBS/door paradigms over SSH, we ought to revive text exploration with modern technologies. ^_^