That makes sense. For the time being I'm very happy with how it's working already. If subfolders are going to heavily impact scanning, then holding off until some day when there's time to put it into a separate scan and it's own XML might indeed be the wiser option. As it is, it takes a few moments longer to run a scan, however it is a worthwhile trade off to me to have it all integrated.
The only real bug I experience is PKG Launcher mounting to the BD Drive somewhat irregularly at the moment, and ROMs on usb001 are detected, but will not boot under any condition. However when PKG Launcher is successfully mounted (both to app_home and the BD drive) it will launch any game from hdd0 without any issues.
For appearances, is there any potential to have cover art instead of disc images without too much effort, in the same way as normal backups? Either in the same Multiman covers folder, or ideally in a separate folder. Retroarch already stores cover art archives in system based subfolders in:
thumbnails\Nintendo - Super Nintendo Entertainment System\Named_Boxarts and thumbnails\Nintendo - Super Nintendo Entertainment System\Named_Snaps and thumbnails\Nintendo - Super Nintendo Entertainment System\Named_Titles
The Snapshots and Titlescreens are well suited to icons due to square dimensions, while the boxart may be distorted due to it's rectangular shape. There are a *lot* of images in these archives normally but the files will be an *exact* match to the filename of the ROM, so it should function similar to the multiman covers, just longer paths.
Here's a blank version of the folder icon I remade from the others as a template. It's not perfect though, mainly just clone brush to fill the gaps.
https://drive.google.com/file/d/0B6Z4l5OoT8IfaVdoZDRJU3hENVk/view?usp=sharing
Here's a cutout version of the invader, again it can be a simple placeholder for now till you have time to tweak it.
https://drive.google.com/file/d/0B6Z4l5OoT8IfUnNEd2xhWm9uN00/view?usp=sharing
Thanks so much for this, this is an incredible addition to the features of webman.