I agree that light games shouldn't be a part of the normal calendar when it's evident that nobody is going to use up a valuable slot to host them as opposed to role madness. And with how relatively simple light games are, I'm not too worried about "too many games at the same time" becoming much of an issue just as long as we regulate it properly.
I don't think a whole new calendar just for light games would be necessary. They can be treated like turbo games with someone hosting them whenever they'd like or they can alternate with ToS/ToL games.
In all, I don't mind light games occurring separately from the regular calendar. But I know Al would.