P: A real plugin architecture to make TIFF files unnecessary

My number one feature request would be a real plugin architecture for Lightroom. It's just kind of nuts that to use any sort of plugin or external application, I have to create a separate TIFF file. The TIFF files break workflow by losing all the history of adjustments applied to the RAW before creating the TIFF, they're a pain to manage, and they take up a large amount of space on disk.Perhaps Lightroom could let plugins create mask overlays or something like that, which would integrate with the develop history. But anything that would avoid the necessity of creating a TIFF file would be welcome.