I played the first Knights of Honor quite a lot (I think I did around 50 campaigns) and I really liked it, it quickly became one of my favorite games ever, so you can only imagine my joy when I heard that my southern neighbors (I live in România) will finally make a sequel I dreamed about for years and years in a row.
But I want to bring to developers attention some of the bad parts of the original game and I really hope they'll be so kind to create the new Knights of Honor without those annoying flaws.
First, I never want to see that "Original Marshal is a spy" bug.
Yes, there is a bug like this and a very dangerous one, a deadly one that can ruin your whole campaign. My spies discovered that the Marshal that is given to you at the very beginning of the game is actually a foreign spy. Puttin' aside the sheer lack of logic (when did he infiltrated, when I was loading the game? How can I infiltrate my own spies in other Royal Courts before the game even start? 😄 ) of this bug, can't tell you enough how destructive this could be.
Happened to me 3 times, so it wasn't just one isolated accident.
Second, be so kind and use the correct flags and symbols for factions (I don't want to see a golden lion as the crest for Wales, but their well-known red dragon) and location of the settlements (Suceava is actually far north in Moldova, not near the Black Sea).
Also, the Teutonic Knights should have german names, not polish ones.
Third, the second (or third) son/daughter coming of age before the first born. Or the third coming of age before the second. It's hilarious, but please fix it, that joke was enough.
Another thing, different prices for replenishing a military unit.
It's not logical that if you miss one men or 20 from a unit, the cost of replenishing that unit to be the same. If you lack less men the cost should be lower, if you lack more men the cost should be higher.
In the end, I'd allow myself to give some suggestions:
It could also be very useful to have the option to tell your vassals to stop fighting each other, it's extremely annoying when those idiots do it and you can't do anything about it.
A "Make peace with Kingdom X!"-option would work wonders in those situations.
If you continue this system with a certain number of skills for Marshals, it would be great to increase it from 6 to 8. There are some very useful skills that you have to give up on because you can pick only 6 of them.
Also, the slots in the Royal Court to be increased from 9 to 15 or something. The need for more Knights is voracious in the late stages of the game.
One last thing, I'd be forever grateful to you if you'd include my native Transylvania as a playable kingdom (like the other medieval romanian provinces that were available, Wallachia and Moldova), the feeling of playin' "at home" is... indescribable...