MES would be a fantastic skill except that it breaks in combat and is pretty much a wasted slot unless you burn everything pulling out again. I've considered trying to make use of MES but it has a lot of weird mechanics (for example you get an insane defense bonus, but generally if you're coming out of cloak you're not trying to tank so what's the point?) that prevent it from having even niche or gimmick-build use.

Personally I'm not sure I'd want to see it fixed... KvK is already notorious for cloak-abuse and having people dipping in and out of cloak every game would just feel goofy.