a balanced modular tends towards this:

sound sources < sound modifiers < modulation sources < utilities
-- JimHowell1970

depending how you count these, I would say my planned rack is not too far from your proportion, depending on how you would count a PAM or a O&C or a Threshold/Edge or many other modules with multiple functions, maybe i should browse the utilities section again and see if i find inspiration there. maybe some crazy utility module at 4/6 hp with a reasonable amount of no-nonsense trig ins, cv outs and vcas, or potentially even bigger if it also brings a 2 channel audio mixer might do the trick of adding more potential automations