TL;DR: A short test of a new banner concept will help us decide if it's worth iteration and improvement.
Here's a link to the banner: https://en.wikipedia.org/wiki/Apple?banner=dsk_p1_lg_ right10&country=US&force=1
I appreciate that you're trying to innovate, and this requires pushing boundaries. I also appreciate that the WMF fundraising principle "minimal disruption"[1] is subjective thing - and that the WMF has traditionally taken this to mean "be disruptive for the shortest period" rather than "be less disruptive overall, even if it takes longer". However, I do feel that *resizing all the article content to the left, and occupying the entire right side third of the screen with a donation request that follows me as I scroll *is significantly more than minimally disruptive. Personally, I would request that this design approach not be pursued on that basis.
-Liam / Wittylama
p.s. Also, on my screen at least, the "x" dismiss button in the top-right is so small that it hides under Chrome's translucent scrollbar
[1] that https://meta.wikimedia.org/wiki/Fundraising_principles#Fundraising