Posting this for possible future changes and/or discussion. A while back I ran into a video (below) explaining Unload, a load remover. In short, it tries to exclude frames in which an image, for example the Loading... icon, is visible.
For 8XLCE it's slightly finicky, as the loading icon both pulses and fades through transitions. So, with a low similarity it leaves a few frames counted, and with high it could take too many (in addition to potential false positives). Very high similarity would be fine, but the main issue would be inconsistency between runs.
Just throwing it out there.
the video:
The missing 54 stages from the two 'NEW STAGE' DLC have been added for a grand total of 305 stages, of which 84 are DLC.
Bonus fact: The Battle of Liang Province has both an original and DLC version. Amazing!
