The QT enhancements to Selenium are not yet published - right? Can you make a Github fork of the code that would allow us folks playing "catch up" with the excellent work you've done to see the differences to base WebDriver? Github has a means to easily compare forks of the same repository (and leave comments for all to see) :-
https://github.com/blog/683-cross-repository-compare-view
I'd imagine you have to 1) fork Selenium on Github, 2) add that fork as an other 'remote' on the checkout of Selenium you have, 3) push as you'd expect.
Then we use the compare feature, to marvel at what you've done, and be able to work out what's best as a next step :)
Does it come with test cases that we can see being executed (assuming the pre-requisite installs of Qt/QtCreator etc.
- Paul