Disclaimer I am VERY new to After Effects, but one thing I struggle with in both AE and PR is using nests and pre-comps without a way to see/compare it easily to the main sequence or composition. Why isn't there an option to view your main content at a lower opacity while you're working in a nest/pre-comp, like an "onion skin" effect? When I am rotoscoping in AE there are different view options to see it with the pink outline over your foreground or with the background highlighted in red. I think something similar could be helpful when working in a nest/pre-comp so I can better align things on the screen by seeing my main content and adjusting accordingly. If something like this exists please let me know!