is the Menu Builder functional yet? I was able to open it, but I couldn't figure out how to do anything with it.
Nope, not yet. It still only will allow you to view menu subroutines located in your scripts. I've been busy with work lately and haven't been able to play much with it. This same thing happened a couple times already, but I always manage to find my way back to the development.
Thankfully, the menu designer was what I was working on last, so I'll be able to dive right back into it.