In a thread with multiple pages there is a collection of links (usually 1, 2, 3, Next) to jump between individual pages in the thread.

Currently this group of buttons is located at the top of the page which means you have to scroll back to the top of the page once you read to the bottom to find the next button when it makes much more sense to have them at the bottom, where you can just immediately click on the next button once you've finished with a page.

Of course there is nothing to stop you having them in both places, which applies to both points, to appease people who might like it the new way rather than the old.

It should only take five minutes to fix each of these points I've raised as it's just a straight copy and paste job of existing code.