[Shangrila00]

The gold cost is fine. Ulm pays for it by being forced to take production 3, and building high admin forts placed for maximum access to resources rather than other factors. The Ulmish war machine is incredibly slow to get rolling or react to the unexpected since all their major troops are move 1 and resource limitations means armies are made up of trickles drawn from every fort rather than massed at the target border. This is also highly thematic, and if necessary, resource costs can be bumped up even higher on blackplates to further emphasize it. I doubt it though given the nerfs we know are coming.

Though given that the theme of blackplates is that they are just regular troops with superb equipment, their stats really ought be bumped back to standard Ulmish except for the morale. It's unthematic for them to have any stat advantages not derived from equipment.