> Also believe the ability to highlight several lines and press Shift+Alt+I to add a cursor to each line without having to use the mouse wasn't possible in Sublime.
It was always possible, I have used Sublime since version 2. Ctrl+Shift+L.
Seems the issue is they use different keyboard shortcuts and that's it.
Since it's been a few years, it's totally possible Sublime has those now. But without a pressing reason to switch, I'll be sticking with what I use now.