Is there a way to make your melee weapon defect ONLY other melee attacks? I looked in other combos and could not find anything.

I don't think so :/

I remember wanting to do a clone wars styled mod and only wanting the magna guard to do that. When I posted, I was told that would be quite impossible since the deflection either deflects everything hitting it or nothing at all.

I thought up a compromise: Make the angle of the block very thin, and the window very small. make the blocking an event when you press the key, instead of a toggle. If you manage to block a bullet, good for you. Like the blocking in chivalry medieval warfare.