Okay so more over all game thing I feel like the reasons stated before (giving healers a chance to shine, innocent citizens death toll, people with less flashy powers like punching things) get a good chance to some amazing things. But, also looking at shows or anything with big epic finales this option offers one. Because after wise Snake is defeated we might have this huge thing that we didn't know revealed to us right after the defeat of it. Or something we didn't expect happen right on the spot and there's this huge "Oh fuck" moment where we all wonder what's going to happen next. The suddenness allows for a lot of fun shock value both Icly and oocly. And both of these things can add to an even greater rp experience.