the "total buildings" control seems superfluous since it just restricts the control that really matters (number of adjacent buildings for the scoring tile)
it's just an extra step (of course it could just be ignored I suppose and set to max value). it did cause some initial confusion (why do I need the total number of buildings since there are no points for buildings alone)
I swear I did it for a reason. Sadly I cannot remember that reason nor can I log in to their site to see why, in my code, I did that thing.
If someone else posts about it I will make more than cursory effort to log in and determine why I put that there.