Re: / in usernames?
You can easily do all the features you asked for in 0.9! It’s going to be a long while before 1.0 has the plugin support that 0.9 does.
I don’t know how to downgrade from 1.0 to 0.9… I can ask around. I am not technical enough to do this stuff, and I never charge for anything… but do you have any budget for a developer? That might help you in case you need some custom help from someone who really knows what they are doing!