I am sympathetic to the cause of bringing Strength back, but I don’t think the way to do that is by pretending that Con is Strength…
IMO, a very elegant fix would be to say that all physical attacks have their damage bonus affected by Strength. Any ability that swaps the stat for att/dmg now does so only for attacks. You can be precise or cunning or deceiving about how you hit (Dex, Int, Cha, respectively) but you can’t fake Strength. Touching is not hurting. You need to be strong to hurt your enemy. As for the damage of ranged weapons:
- Thrown weapons remain Strength based.
- Ammunition weapons need to be fitted to a specific Strength (mighty composite bows, but also slings, even crossbows can be made harder to crank).
At the very least, any martial character should get 10 Strength to avoid having a negative on damage, but they would benefit from bumping that to 12 or 14 even if their main stat is Dex or another.
That change alone is sufficient, IMO.