Does the mod add difficulty during the game or it only change the encounter rates?
Do you think a save of the game played with this mod will be compatible with the future DLC?
This mod only change the encounter rate and what you encounter for the game and some QoL such as trainers in Raid battles. But doesnt change anything for opponent AI so no change to game difficulty.
As for future DLCs, right now I;m leaning toward discontinuing support for this mod as of pokemon home and the expansion pass releases, since pokemon home adds 200+ pokemon into the game's possible encounters and thats too much for one man to figure out where to spawn them all. Plus this mod already messes with the galarian slowpoke that you get for free by installing the 1.1 update.