And of course, a blockade of more than X IC days would render ALL meters supported by that trade route useless for a one-month duration (essentially meaning the group loses its bonus for that OOC month). Perhaps such a blockade could also have affects on groups' army strength and fleet deployment... *shrug*
It's probably not the best idea, but on first thought it seems to work, and seems simple enough to be implimented without TOO much trouble. Personally, I think it would be worth it in order to introduce blockades, sieges, and such to RP. And I think a tracking script for this would be fairily simple to design.
Regardless, I think a trade system is certainly worthy of further consideration...
[size=1]"So the woman asked me what I wanted on the sandwich and I said I do not care it is for a duck, and she was like oh then it's free. I was not aware that ducks eat for free at Subway. It's like give me a chicken fajita sub, but don't worry about ringing it up, it is for a duck.”
-Mitch Hedberg
[/size]