Making a faction rely on call in inf to have functional mainline inf is bad design in my opinion. It renders many of all sov commanders useless.
Also cons are not so cheap to reinforce.
I agree with the last point, but faction designs are heavily discussed constantly with no productive results. I disagree about relying on call-in infantry being bad design, it could have been badly implemented but adds risks/rewards and originality.
So volks and cons have the same effective reinforce cost but volks is a superior unit that can perform early, mid and late game. Gets utility through natural tech progression and have good non-doc weapon upgrade. Able to reach vet 5 on top of this.
I agree that the 7 man thing is actual good for lategame utility and makes merging and zerg rush for snares less risky.
Volks vs cons is an endless debate with more argument casualties than ww1+ww2 combined. I would suggest you not to continue on that road. Not because i like bully volks, but because their differences are deeply rooted in the factions design, available units to support and overall endgame tactics.
Also cons are not that bad in this meta, they are not for the newest players though, since they will not win engagements 1v1, but they can win most fights with tactics and some mindgames.
I wonder if there is a possible way to make cons cheaper to reinforce until T3... to allow some riskier plays using cons. You cant also spam cons if the game has only 5-8 mins and MGs clearly dominate that time frame too.