I find the filter bar very nice. The newest update give us the possibility to filter files by extension.
So when i use Flat view i.e. for root folder there are many many extensions.
I want to group them or filter them or sort them by PerceivedType (audio,video,text,..).
I did my work an created buttons for this jobs, but so i have to know which extension types (avi|mpg|mp4|..) i want to display.
I this dynamic world everything change fast, an i dont want to adjust and adjust.
I want to use the ready to use solution - PerceivedType.
The PerceivedType information in the registry is not very reliable. Lots of types don't have them, some have the wrong ones, and when you install certain popular software some of them get trashed, unfortunately.
IMO, you'd be better off using the actual extensions, maybe via File Type Groups. Using File Type Groups would let you manage which extensions are in which group in one place, while referring to them in various places using grp:Images and similar wildcards.)
If you really want PerceivedType as a column, the only way to do that would be to write a shell extension.