For me the baked in sizing is not helpful and wish the info could just be sent via the XML so that my sizing info is handled by FCP like in my original timeline. I work with a lot of interlaced TV shows. I had tried a bunch of approaches but in the end had to ignore scaling and redo them manually in FCP. When I tried using resolve with scaling it would mess up the interlacing some how. Once there was an effect in FCP on this rendered file interlacing was all mangled. Also, sometimes my scaling is layered so it needs to have transparency and when rendering with ProRes this is not possible. This is an area that could be heavily improved in my opinion.