I often like to sort the contents of some folders by "name", and some by "modified" date.
1. It would be great to have a global, and folder level memory, such that you can have some folders remain sorted by "modified" date, even if you apply "name globally".
2. Secondly, for some reason, "modified" only seems to pertain to the end item its self, instead of the contents. For instance, if I have a 5 folders and within one of them I edit a Doc., the folder order will not change even though the contents of one of them has shifted, only the order of the Docs. within the folder will change. When you are using the "modified" filter, most often you are trying to put your most frequently accessed documents first. It would then make sense to me that every folder level out from the end Doc. adjusted should also be bumped up. I hope that makes sense.

Loving the product. Keep up the good work!