GIMP now ships with over 80 GEGL-based filters. A lot of those are former GIMP effects. Here is why GEGL-based implementations are better:
You can apply them on images in 32-bit per color channel precision mode.
You can preview them right on the canvas, and if an image is larger than the viewport, GIMP will render the viewport first for immediate feedback.
You can use split preview to compare original image with its processed version and swap before/after sides both horizontally and vertically.
In a future non-destructive GIMP, you will be able to adjust settings of those filters without undoing a ton of steps.
Some of the GEGL-based filters have OpenCL version for hardware acceleration. This will come in handy, if OpenCL drivers work well for you. Furthermore many operations can come multi-threaded to use your processor at their full power.
Contributors: Michael Natterer, Øyvind Kolås, Thomas Manni…