Disconnect and Join Keyboard shortcut

Hello. 

I have a simple feature request one of which used to be available and I wish it still were.

The Jump To feature (cmd+k and ctrl+k) used to allow you to join channels. Can you bring that back again? I'm constantly using the jump to feature and I would like to be able to quickly join channels without having to move my hand from the keyboard to the mouse. 

Also, along those lines, I'd like a quick disconnect or at least set it up as an action for a keybind.

Lastly, (and I know I'll never get this, but it doesn't hurt to ask), vim key binding capability would be super cool if only for scrolling. 

Thanks for listening.