It would be perfect if there was an option/config to limit the number of max active quarry for each tier or make each consecutive quarry 1-10% less effective/fast than the one before
I think is a good idea to prevent the mass spam of quarry
For example:
nerf mk1 to max 10 active quarry or nerf effectiveness by 15%
nerf mk2 to max 15 active quarry or nerf effectiveness by 10%
nerf mk3 to max 30 active quarry or nerf effectiveness by 5%
no nerf for mk4 (or nerf in config options)
With this method you avoid the mass spam of low tier quarry and forced to build high tier quarry for maximum efficency/production
I do not know if this would be possible but it would be great