I've created a trading mod, which adds 12 new traders. However, their frequency is high. This often means that there are more custom traders than vanilla traders. Is there a way to reduce this? I've noticed that in the IncidentDef, there is <chance>, would creating a new IncidentDef and increasing the chance, mean that a) more traders arrive or b)more custom traders arrive? Also, would a new IncidentDef require a .dll?
A higher chance will make more traders arrive. What you want to change / add is
<minRefireDays>360</minRefireDays>
This is the amount of days before it may happen again (in this example, one three years).
You don't need a dll to add a new IncidentDef.
Actually that's about 3 years, a year ingame is only 120 days (12 months per year, 10 days each).
Ah, I didn't know. Thanks for the correction!