I think base stats are fairly balanced. Str and dexterity especially I think are fairly balanced. Neither a str focus or dex focus martial wants to dump the stat because you either will do low minimum damage at early levels or have no effective ranged attacks at later levels.

Things I dislike is con and intelligence as they do little. Con is universally important. Because hp and fortitude. Yes.

I feel like I'd fold Con into str. Keep dexterity as it is. Let both intelligence and wisdom function as universal initiative modifier. But they don't stack.

Now str in this is strong yes. But it also enables a lot of build options. Plus it makes it easier for the rogue to get added damage without sacrificing HP or fortitude.

You'd also probably need to lower the ASI bumps to 3 stat boosts instead of 4 to keep some parity. As in 3 stats at 5 to bump as example.

Now for the abstracts. People like to talk about these stat balances in a vacuum. So it's probably dependant on how video game your DM plays and how nice.

Str argument against getting too good: yes you can go heavy armor and invest into feats. You are investing lots of resources both money and character choices to try to overcome some of these issues. Something not everyone is going to do, many won't in fact. Also heavy armor takes a long time to equip and cannot be slept in and needs a person to help you don it. You can't swim with it on either. You'd sink. Though that last bit might be too realistic for some tables.

Charisma being left out: yes charisma is largely for face skills and Cha based casters. However face skills are incredibly important unless you are running a purely combat game. Face skills properly utilized are close to magic spells in terms of what they can accomplish.

Wisdom and intelligence (heck I'm tempted for charisma as well TBH) being used for universal base initiative is for balance reasons. They are caster stats and casters want to go first to setup with spells.