Edymnion
Carebear Extraordinaire!
Actually, what we have in game now CANNOT be a light based weapon.And for the most part, we are seeing genre based specifics.
This does not mean every last single thing put into the game should be a copy of something from a movie, TV show or book.
To me, the beam weapon is more hard sci-fi than the beam weapons seen in movies and TV shows. If it's made of LIGHT, you shouldn't be able to watch it travel, if you're anywhere close enough to see the beam emerge, its travel time is going to be pretty much instantaneous, because LIGHT.
The suggestions people are offering are pretty much asking for a longer cannon weapon, not a beam weapon.
Space is a vacuum, there is no dense dust cloud to refract the light back to our eyes. All light based laser weapons would be invisible. The fact that we can see the beams at all, and that we can color the beams, means that they can't be pure laser based weapons.