There is something more going on here though. Arcaea has not had a proper battle in more then 30 days, just tiny skirmishes against groups of monsters and undead, yet we do not have a TMP warning. Without far more information about the algorithm it is hard to say exactly what is going on, for example how long does the effect of a battle last? What is the weighting system with regards to the size of the battle?
It honestly discourages from putting gold in the bounty pot, as it has become prefferable to have the rogues spawn so that the armies can fight them than to avoid having them do a little temporary production damage as they spawn.
