While i think this is a good idea, lightsabers will never hit unless you have like, one specific move that hit in the floor that only happens to be in one skill tree or something, its a bit of a nightmare for melee users. (assuming we're still using king david animations)
Had this before, however it broke sometimes where people (On their side) would be standing up, but others would just see a sprinting speed prone person, or someone would get stuck because their hitbox somehow is in the floor so the game wouldn't allow them to stand up. (Would need admin assistance)
Its a good idea in theory, the practice however tends to be messy at best, however as mentioned, if we dont use kind david swings anymore then i can see this being sorta alright. (To be clear i am not against it, just because we had it before, it can be fun, however i was never aware if there were any technical issues in the code that came from prone so i'm only speaking from gameplay perspective).
It takes about 2.5 seconds to stand up so if you get caught be an enemy sniper, you're fucked if you cant tank shots.