We know that in HIP total levy troops is much less than what's in vanilla, namely because of levy efficiency. It's fair in game because all realms get hit by it, so it does its work to prevent giant realms blob uncontrollably.
But it doesn't work well with those special invasions, Mongol and Aztec. I'm sure that when developer give them those event troops, they give them an arbitrary number that they can change to anything so they can conquest those realm they conquered historically (or as developer intended to) and so for sufficiently large realm it can stiil be a challenge. But those challenges is out of whack in HIP since they still have the same number of event troops but with much smaller levy that can be mustered.
I think it's not what the original developer intended, because while Mongol apparently really storm Baghdad with 100k troops (but at the same time a very weakened Abbasid can muster 50k troops, so maybe those numbers shouldn't be used as an argument for 100k Mongol event troops), the numbers of Aztec invasion event troops is completely arbitrary to give challenge to players, and those challenges become completely unbeatable when playing HIP, even when the player already controls from Frisia to Mali, with absolute crown authority.
Maybe they should be rescaled? I think even for example 50k event troops to Aztecs is already very strong to demolish Western Europe in HIP, so 90k is more than enough. Mongol troops can be rescaled too as a Giant Seljuk maybe can only muster 20k troops at most so having 40k Event troops to Mongol is more than enough, so 70k maybe is sufficient. Those numbers of course can be rethinked by Devs as it's entirely out of my head.
TL;DR : since HIP realms have less troops, invasion event troops should also be dialed down.
But it doesn't work well with those special invasions, Mongol and Aztec. I'm sure that when developer give them those event troops, they give them an arbitrary number that they can change to anything so they can conquest those realm they conquered historically (or as developer intended to) and so for sufficiently large realm it can stiil be a challenge. But those challenges is out of whack in HIP since they still have the same number of event troops but with much smaller levy that can be mustered.
I think it's not what the original developer intended, because while Mongol apparently really storm Baghdad with 100k troops (but at the same time a very weakened Abbasid can muster 50k troops, so maybe those numbers shouldn't be used as an argument for 100k Mongol event troops), the numbers of Aztec invasion event troops is completely arbitrary to give challenge to players, and those challenges become completely unbeatable when playing HIP, even when the player already controls from Frisia to Mali, with absolute crown authority.
Maybe they should be rescaled? I think even for example 50k event troops to Aztecs is already very strong to demolish Western Europe in HIP, so 90k is more than enough. Mongol troops can be rescaled too as a Giant Seljuk maybe can only muster 20k troops at most so having 40k Event troops to Mongol is more than enough, so 70k maybe is sufficient. Those numbers of course can be rethinked by Devs as it's entirely out of my head.
TL;DR : since HIP realms have less troops, invasion event troops should also be dialed down.