One thing that I already stated is that you get too much money too soon. When I had my battle with Grunt my gear was maxed out and I had 20k groschen. So I decided to “loot in a realistic way” from there. No armour pieces, just a few weapons here and there, things I thought I could actually carry with me. But I should´ve done that from the start because now I don´t have anything to spend my money on. So I bought stuff and sold it immediatly till I had a few groschen left, I sold my armour (most of it), but still with my haggling and a bit of looting I could get everything back in a few hours.
I think it would be a good idea, if you want platearmour and a good longsword, that you have to "order them, you´d need a blacksmith who´s skilled enough and has knowledge of the particular set of amour that you want f.e. Nuremberger and all that for a price you have to struggle to get.
Harder enemies except knights shouldn´t have platearmour but better skill so you can´t loot it and traders probably shouldn´t buy cuman stuff.
Things like that would improve the “money-problem” and you could appreciate it more, if you finally bought that sweet armour and are running around with it.
Greetings