Handle Photoshop masks on folders
It would be nice if masks on Photoshop folders come through to after effects when converting to precomps. They could just show up as their black/white layer above the comp with the suffix "_MASK".
Alternatively, give a warning if there are folders with masks when importing, so that you know to go look and resolve them. Sometimes in large PSDs it's hard to track down every instance of a mask, and it'd be nice to get a warning about.