I think it'll be useful if we had the magic clock plugin for parkour. What magic clocks does is that it hides all players from you so you can't see them, then you can right click it again to see them again. I think this really useful because, sometimes when two or more people are on a block, it gets hard to see where to jump next. This can also help with fps lag issues for a player if they're having any. Note: The clock also has an antispam feature, so you don't spam it. http://dev.bukkit.org/bukkit-plugins/magic-clock/
