How to fix MOB SPAWN!

[Vevrok]

Well, neither everyone will like this idea, but I am posting it!
I think that's better way to fix it the spam.
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When someone does spawn monsters, and another player is over the monsters they will re-spawn when the player pass to next map, and you will not be followed when the player who made the spawn passes to the other map.
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[Aegis]

I dont see how this fixes a mob spawn... to me sounds just how to make in some cases undesired mobs spawn close to someone exping with already mobs then change map and making him deal with it.... sounds more like a suggestion on how to do a half way mob spawn drag but focused on the mobs that disturb the most (example squoyotes)...