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Originally posted by Graeme Dice:
Giving units the ability to run away without routing would be a little powerful in the case of flying units. Caelum for example would be nearly uncatchable.

Maybe they would need some changes (higher costs, less power, etc...), but it only reflect common sense : I wonder how a landlubber swordsman can ever catch a flyer who refuses combat !
MoM and AoW have nice features about it : non-flyers can only engage other non-flyers, only flyers can engage all