The paid version has 5 difficulties, each with their own loot tables. That's fine.

However, I would like to add a few "difficulties" of my own to run themed bases. Is this possible without sacrificing any of the 5 levels to this?  Can I make more difficulty levels?

hi, no, you can't add custom difficulties. you can rename existing ones in the language file but it's not possible to add new ones yet. i hope to implement this at some point

Alright, I understand. Thing is I want to add like 3 different themes and they would all require separate difficulties because they would need different loot. Losing 3 of the 5 difficulties to do this is too much. I guess this idea will have to wait a bit longer. 

Thanks for the quick response.

Edit: If anything, then maybe adding 5 additional "custom" difficulties could be a good start (custom_1-custom_5)? Working exactly like the current difficulties, just adding a few more to pick from. It wouldn't force the plugin to create new ones on the fly but rather adding a few more, to use if one wish. 

I wish it were that simple :p
unfortunately each difficulty requires a tremendous amount of code
so it's important that I reduce it to a dynamic on-the-fly helper instead