I mentioned the CTRL+D multi cursor specifically because I think this feature is only available in VSCode if you choose the Atom key bindings. I regularly try to show this to my colleagues whenever we’re pairing, but they need to fall back to search & replace in VRSCode.
I'm glad you enjoy that `.` hotkey! Don't worry, it won't go away! I'm about 90% sure multi cursor works the same way, but I'll verify and make sure we don't take a step back there :)
I hope you find value in the other features we'll be delivering as part of the VS Code transition!