I'm using the In Control mod for my themed modpack, and here is a list of suggestions I would find useful

This is all to effects.json

1. Make so that two actions could be executed through one condition. It would make the code much cleaner
2. Add an operator to revert true to false, or something like "else". Example: I want an action to be carried out if the player doesn't wear a full set of some specific armor. If he wears it, it's false, else it's true, using "helmet/..." conditions. How it could be implemented right now is only through separating this into four pieces of code with separated actions and conditions of "lack***" type, which has its own problems (the solution wouldn't be equivalent, and also #515). With the next suggestion it would get really powerful
3. Maybe add more sophisticated logic like "OR", which would evaluate to true if one (or a group) of conditions is true
4. Add a possibility to inflict drowning and freezing, because they ain't potion effects
5. Add another condition to check player's potion effects (and maybe fire, drowning and freezing too)

I just wanted to say that this mod is very good and powerful, and I have huge respect for the autor. I only wanted to suggest something to make it just a little bit better.