I would argue there is more than sufficient interest :) All you have to do is scan the angularjs google groups for ngRepeat issues.

Infact, one of the solutions proposed for ngRepeat issue (with lot of caveats) has 300+ stars no github

https://github.com/Pasvaz/bindonce

Including me, there are lot of folks who would find your solution very useful. You are addressing a fundamental O(n) scaling problem in AngularJS.