Thank you so much for the feedback! ;3
I chose to refer to Level as "X" because I saw that convention used in a few other fanmade factions, and I liked how it helps save space and keep the board layout cleaner. "X" is short and functional, even if it's a bit abstract at first glance.
As for the "Training Area" name — I totally get your point! I was actually avoiding the word "Hospital" because it's already used in the Marquise de Cat's "Field Hospital" ability, and I wanted something that fits better with the lore I had in mind for this faction. That said, your comment definitely gives me something to think about — I may consider a name change in the future.
Really appreciate your thoughtful insights!