Hello,
I'm a longtime Affinity photo user, I almost acquired it since version 1.
I want to suggest strongly, even beg for a Layer Crop feature in addition to the existing Crop tool.
Yes I know that there are several workarounds to do this like a) using the square selection tool, doing copy-paste to the selected area and then delete the original image, b) using a square mask or c) using a square shape and put the desire image to crop as a sublayer of that shape.
But think about that: that's very annoying when what we want to do is only a simple crop. I work a lot with images that I need to crop to form a final image and its very tired having to this every time.
Thanks