Con as a abilty score is fine.Con can be more or less just deleted from the game and most people would not notice it.
It's just a relic.
in 12 years, 80% of characters that I saw at the table had 14 Con, 15% is split between 12 and 16, and the rest is anything else.
we jokingly call it "the 14 stat".
just move all Con saves to STR, this would help with STR/DEX power debate, give everyone +2 HP per level and be done with it.
Concentration can just be casting stat save.
The issue is Wizard of the Coast hiring extremely traditionalist designers for 50 years and not utilizing it to the fully.
People who do martial arts know how much Stamina affects offense.
You should be able to make weapon attacks and cast spells with Constitution.








