I find it extremely long and bothering to find 4-sticker pieces around the cube. Being able to hide irrelevant pieces (e.g. when there is one sticker of a face we don't want to handle) would make it much faster to find.
My suggestion: chose (by clicking on the center of the face, possibly while hitting MAJ or CTRL, or ALT) which color to hide, and hide all pieces that have one sticker of this color (except the center piece on n^4 with n odd).
I find it extremely long and bothering to find 4-sticker pieces around the cube. Being able to hide irrelevant pieces (e.g. when there is one sticker of a face we don't want to handle) would make it much faster to find.
My suggestion: chose (by clicking on the center of the face, possibly while hitting MAJ or CTRL, or ALT) which color to hide, and hide all pieces that have one sticker of this color (except the center piece on n^4 with n odd).