Just saw this. I’ve poked around the source code. It might be possible, but this would require re-factoring a lot of the skin source code. This is not something I want to do seeing as the next major mediawiki version is due later this year, and the next major skin-revamp is doing early next year. I can tackle this after all that as I don’t want to keep repeating this work.
I did tweak the “to top” to “^ To Top”. Hopefully that is easier to see.