[zoncxs]

Good questions, I always wondered this myself. My answers are what I came up with to justify them, so it will be different from what others might say.

I will use metaphors for the answers.

imagine M.A. slot cost being a circle, it can do everything inside said circle, the smaller the circle the less the slot cost costs.

The Trait-limitation would then be another circle inside the first, limiting the choices further.


Why would you do this? well a player won't, but a GM would.

Lets say I wanted to create a power, the core ability is M.A.

This power can do anything, so I set it at the highest cost (what was it? 7 and 5? which Psionic Powers labeled "Slotted Cosmic Powers") But I do not want my players to be able to do everything with it, I just want a core power to build from.

So I put the limitations on it to narrow the power for players. They can only use it for physical advantages and said advantages need a common theme like "Fire" or "Ice".

Does that make sense?