The difficulty changes are very intertwined with a lot of other changes, such as PSI costs and when you learn them, enemy groups configurations, and the like. It would be extremely difficult for me to try to separate all that out as a stand alone patch.
The good news for you is one of the features that is already DONE for the next version is the ability to select GAME DIFFICULTY from the file menu (which also means you can load up an sram save to make things harder or easier), complete with a fully functional EASY MODE which is much closer to vanilla EB’s difficulty level. There will also be a HARD MODE for the (very) few who after beating this hack may want an extra challenge. Here’s a breakdown of what the difficulty modes actually do:
Normal: Standard difficulty for the hack.
Easy: Enemies damage is decreased in almost all circumstances, they will no longer use their most devastating attacks at all. Your Places auto-upgrading is disabled. HP/PP meters roll down slower.
Hard: Same as Normal except HP/PP meters roll down fast, and items are 2x as expensive!