Some remarks on The Mongols

[4CV]

If you still have the time or interest to run another test, could you try using the attached modmod? It’s a tweaked version of UPAI (adds new flavors for skirmishers and other missing unit lines), with Genghis’ skirmisher flavor set to 10 (can be set higher, but conventionally leader flavors don't exceed 10). If flavors can help with this, the modmod should show a noticeable increase in skirmishers.
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I installed it now and will start a duell Attila vs Genghis soon. May the better Skirmisher team win!