**Motivation**
* It's unusual to have filtering settings below the items. Usually you have the filter settings before the items you're searching in, inside and outside of Blender.
* Since the list extends to the bottom, it's may be more likely that the lower boundary of the list is scrolled out of view than the upper one.
* While entering a filter string, the number of visible items changes and the filter settings may jump around.
* For the Asset View UI template, used for pose libraries, we enlarge the UI list so all items fit into the list, to avoid a scrolling view inside a scrolling view (rows are taller there, making this an issue). There is lots of scrolling still, especially to switch from the search button to the other settings: {F10032742}
**Proposal**
Proposal is to simply move the filter options to the top of the list.
Screenshots of a quick implementation (P2100):
| {F10047309} | {F10047311} | |
| {F10047313} | {F10047317} | {F10047315} |
**Downsides**
* Takes slightly more space than the previous solution, which combined the triangle to expand the filter settings with the grip button.
* It does feel a bit odd at first :) But I think you get used to it quickly.
* If the list is at the top of the layout, its upper edge may still tend to be scrolled out of view. E.g. in the material properties.
* Aesthetically not too great?