The maps for the scenario's were an idea from Jan-Willem van der Pijl, who did al the original artwork for the game. I was also very pleased with this idea and it's execution.
The plate armor rules are indeed game play driven instead of being historically correct. Game-wise it should be a rare item. But being able to move just 4" instead of 6" should be compensated by the fact that the model is almost invincible to any regular attack :-)
As far as I know, Poldercon 2021 is cancelled. But if you want to play a game at the specially designed demo-table you might want to visit Thundercon in Apeldoorn on the 19th of September.