Well, judging from the current war, an MDP ally isnt expected to declare war on EVERY alliance who dows on their ally. Generally one or two is considered enough. I'm not sure if people would want to be forced to counter on a half dozen alliances. If such a suggestion was implemented, it would certainly shorten an alliances life-span quite a bit, as micros would be forced to choose between hitting alliances several times their size, or suffer severe economic penalites. Under those circumstances, many would simply leave that alliance. This doesn't really account for instances where an alliance requested its allies stay out of a conflict. If this suggestion was implemented, it is likely that some alliances would simply switch to just signing optionals rather than mandatories. It also doesn't account for neutrals, who don't sign treaties, and thus would be cut out of the benefits that would become to be seen as the norm in other alliances. Micros would also be affected, as people left for big alliances with lots of connections, and thus more economic benefits. The five day limit doesn't take into account instances in which alliances are held in reserve during wars. While this is a good idea in theory, execution would either be difficult, or make life difficult for the players.