Is it possible to allow AD/AP items to scale @ .5 benefits to champions who do not benefit from it?

Basically, what I'm proposing is every champion will benefit from AD/AP; however, it would be at half the value if they aren't an AP/AD champ, respectively.

This would be huge for role-specific items that are unique (Zhonya's, Hextech items, etc.). It would be a great change, in the sense that you don't have to create a similar item for each role (like Mortal Reminder/Morello, Rylai's/Frozen Mallet, etc....).

Anyway, just a thought. It seems viable on paper.