I love Sublime Text 3. The new features are awesome. Unfortunately plugins need updating/replacing, so there is going to be a transition period.
To help the transition period, we need a hero, who could make a simple, little, and quick plugin:
⌘ + ⇧ + P (ctrl + shift + p on windows ) -> "Open With Sublime Text 2" -> Return (enter)
and the current document would be opened in Sublime Text 2. Then I can do whatever I need with it in ST2. Then save & close the document down and keep doing my thing in ST3 again. This would be really great!