flamingkillamajig wrote:This would make pursuing into another combat a little more tough for the attacker than the defender...
This seems to be the crux of the concept.
Rules can "make sense" and "sound fun" and all that, but the bottom line is: why do you feel it necessary?
The answer to that question seems to be "because units pursuing into another combat is too easy/effective/etc." Is that about right?
It's an interesting concept. And I think it'd be a cool thing to implement in a campaign. But I don't see a problem with units pursuing into other combats. It doesn't happen too often, and when it does, it's usually because one player managed to apply a lot of pressure to a small part of their opponent's forces, and broken through the line. Which is something that should be rewarded, because it's hard to do.