Navigating nested menu structure has been the only way to select a filter in GIMP. It is fairly daunting with a mouse and extremely hard with pointing devices such as tablets.
This spec proposes a search-based interface for filter selection.
For the search interface to function, the filter API needs to be extended to provide useful metadata to query for.
Name: Gaussian Blur
Description - “Applies a gaussian blur to the drawable, with specified radius of affect. The standard deviation of the normal distribution used to modify pixel values is calculated based on the supplied radius. Horizontal and vertical blurring can be independently invoked by specifying only one to run...”
Tags - blur, fuzzy, defocus, unsharp