DBlade Hack Idea?

From what I've seen/thought about, it's obvious that weapon things are client side (projectile noclip), why can't you make a hack to make dblade shots shoot "together" like a normal weapon, just stack their two attacks together?
If this isn't possible, well, just tell me why

This would be interesting to see with staffs (ep mostly) and pixie (which would become super overpowered). IDK if it's actually possible.

Doing anything remotely like this will cause you to disconnect immediately.