Here's a "Hmmmmm!" thought for you.

[sagunto]

Oh my, I guess that you should use your best judgement, and proceed with the muddy scenario that you're playing.

I don't have the scenario that you are playing, so it's hard to tell what kind of an impact that using this house rule would cause. You're an experienced player, so your determinatioin of "a significant impact" is all that matters.

Thanks for an interesting discussion on this topic.