Cerabow's mod (https://ffhacktics.com/smf/index.php?topic=12487.msg231540#msg231540) is really great, but while playing through I was frustrated by the need to move to specific tiles to unlock the next level of deep dungeon. This led me to create the attached hack that can be patched directly over an ISO that was already patched with Cerabow's ppf (0.13.2668) so the next level of deep dungeon will auto unlock when the player wins the battle at the current deepest level.
I've also attached a version compatible with the vanilla game (the only thing changed is the location offset), but if you're working with the vanilla game, it would probably be better to edit the conditionals using the spreadsheet: https://ffhacktics.com/smf/index.php?topic=12859.msg231014
I also tested the deep dungeon light fix (https://ffhacktics.com/smf/index.php?topic=12525.0) over Cerabow's, and didn't have any issues.