This is a major reason why space floaters are not my favorite type of map. It just feels lame to die (or kill someone) by falling off an edge. The only time a floater map is ok to me is when the grappling hook is enabled. Then you're just inconvenienced by falling off the edge instead of killed.
I feel the same with lava/slime pits. Those types of deaths are just too "easy". I don't even like killing other people that way.
But, on enclosed maps, fighting someone with the laser is fun. It's a good challenge. It makes people think more about their movement and have to adjust their aim as they get juggled around. It helps with practicing aim as well as timing. I'm getting better at it, though I'm not a freak with the laser like mkzelda is o_O. He can do the in-air laser juggling frequently.