6. Can only have one wendy filter on at a time (I suppose this is a feature request). I would dearly like to be able to have several filters on at once.

Hmm, I'll think about this; it is technically feasible. In the meantime, at least if you only want ANDed (intersection) filters and not ORred (union) filters, it's already possible to set up a single filter that has the same effect as any combination of existing filters. For instance, if you've got a Country flag and a High-bitrate flag, you can set up a Country-Only filter, a High-Only filter, and a Country-And-High filter.

Incidentally, Country is a bad example of a filter: that should be done by the Genre field. (Search by Genre=>Country; Wendy filters then apply to the search results as usual.)

Peter