Hi Brian, me too, I love this feature!
I never used Code, but a friend of mine showed it to me and I loved multiple cursor so much that I searched for an Eclipse equivalent, found it and installed it. It exists as a standalone Eclipse plug-in and it works flawlessly. At least in standard Eclipse editors. This was before I discovered CodeMix. In fact I’m unable to make it work with CodeMix editors. 🙁
Maybe you, awesome developers, are able to solve the issue and include it in CodeMix. It’s available under EPL and you can find it here: https://github.com/EliMirren/Eclipse-Multiple-Cursor
Thank you for reading me 😉