CON is the weakest stat? Have you looked at INT? The score that only has skills you only need 1-2 party members to care about.On most of my builds Con is typically my 4th stat.
Constitution is generally the weakest stat in the game. There are weaker stats for specific builds but a Constitution above a 12 is generally a waste. The hit point boost you get is not generally worth the investment, you are better off raising your AC and on a caster getting defensive spells and if you actually need more hps get spells that give you temp hit points. The only class Constitution is really important for is a Barbarian and needing Constitution is one reason a Barbarian is such a weak class.
Other stats are not only competitive, they are for the most part better than Constitution. Constitution is tied to no skills at all.
Here are the 5 characters I have in DNDB right now that I did point buy with and the highest Constitution among them is a 12. Two of them went 1st-20th level (the Monk went to 20th but was not leveled past 19 on DNDB). 3 of them are hard melee characters going toe to toe in every encounter and soaking up attacks:
And your Monk is proves my point.
Monk has a built in class features to elevate Dex and Wis scores above Con to care about 3-4 scores.
Druid doesn't.
Rogue doesn't.
Sorcerer doesn't.
Warlock doesn't.
Wizard doesn't.
Just go hard on Prime Score, set DEX and CON to 14. No brain cells sweating.
Why should the game be designed where the ability score have parity in their core usages?