Ok, I understand what you want and will add to "to investigate" list. We did not re-use regions till now, so we'll need some time to invest before we find approriate interfaces of SQL Editor control.
<by the way - I just have updated 2.6 version once again, with some small fixes/additions reported by users since yesterday>
Good man. If you won't be looking at this for a while, can I suggest that you contact me when you do get round to it? I may just have written something myself by then which you might be able to use.
Ok, thank you ! I will do.
Just in case: I have created a sample project for SSMS 2012 add-in. It has some minor theory and a downloadable project:
http://www.ssmsboost.com/create-own-ssms-2012-add-in-sample-code-with-download
It might save you some hours 🙂