Well, non-backward compatibility is a shame but of course if it's for the overall welfare of Construct thenit's ok.
Also, the term C2 reminds me of a a brand of drink in our country
<img src="http://3.bp.blogspot.com/_U_VkeJI_300/S3N4a9-WmOI/AAAAAAAAICE/9k24SDiHBo8/s400/18679_293394576298_505411298_3648262_1471496_n.jpg">