Idea: static global user variants for configs

My friend came up with this idea when being annoyed by configuring tens of new mobs. The idea is pretty like <String.xml> in Android app: this file saves several name:value pairs. And in normal config files, like configs in /skills, we can call the values definded in <Strings.xml> in the form like <get.a>. e.g.:

test:
skills:
- delay <get.a>
- skill{s=state} @target damage:<get.damage> @BasicEffect

This would be pretty useful when multiple mobs, even files, share same values due...

Idea: static global user variants for configs