Currently I only have 2 options: "Prevent combination with other promotions" or "Do not combine with".
When I have e.g. 2 promotions which should work together but not with other promotions I would have to add all other promotions to the "Do not combine with" field which can be tediuos when having a lot of individual promotions.

I would be nice to have either an option to negate the "Do not combine with" condition making it an inclusion or having a seperate inclusion field where both, exclusion and inclusion can be combined.