@witchkitten,
Yes I came to Kobo from Sony, which did show page numbers in the TOC.
On a Kobo reading a standard epub (not kepub) the nearest you can get to seeing how much is left in current chapter is
- tap screen to show in-book menu
- tap navigation icon (<->)
- tap next chapter icon (>>) and note page no.
- tap back icon (curly arrow) and note current page no.
- mentally subtract one from the other to get no. of pages* to next chapter
- tap screen to hide menu again
Easily do-able but not exactly 'slick'
* where one-page means the normal Adobe-style page, not one-screenful.