Im thinking a good way to avoid unofficial wars in the future, that represent itself with long drawn out conflicts: could benefit from a change like this.

Max Meter Decay:
Day 1: 200
Day 2: 195
Day 3: 190
Day 4: 185
Day 7: 170
Day 10: 155:
Day 14: 135

So in essence the longer a conflict is going on the harder it gets to avoid the said war.
This would especially benefit smaller kingdoms as well that has an even harder time maxing meter.