Atm the replays are listed by recording date. But, navigating to the bottom with a chunky list adds a minor inconvenience. A quick to reach sort (ascending/descending) button that persists would be handy. Of course, there are a few other things to consider, like sorting attribute (record date, alphabetical, custom order?, etc...) (now it's effectively record date) and maybe even search box? Or possibly applying filters to the list? (that could be an issue on its own)

Anyways, a simple boolean sort button would make it a little bit easier to navigate on large replay lists.

and maybe even search box?

well you can already search for a replay by typing its name in the replay viewer

The more you know...