Edit in only one sequence and wherever a a 7D clip is ...select scale to frame size or use motion scale.
Your &D clips and your Gopro clips will be seen in the source monitor correctly scaled (natively) but when in the program monitor ..not so. Thats why "scale to frame size or other option.
I thought about editing the whole 7D track in a dedicated sequence, but it would mean jumping back and forth the main sequence and this one to edit the movie... Not very pratical.
But the 'scale to frame size' is almost perfect. Should have thought about that. Thanks!
Anyway, there should be a global track effects/transform control, not only for size but also color correction, rotation, position, etc without having to precomp everything. Don't you think?
You can copy and paste it from Motion Control