I don't know if I missed a Gimp's feature, or if Gimp is not really made to reframe a photo
(in fact, that's THE point that explain why I still use Photoshop...).

But I just would like to choose a rectangular crop AND a rotation TOGETHER and visualise it "in continue" before reframing.

HEEEEEEEEEEEEEEEEEEEEEEEEEEEELP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

(and thank you for it!)