"By and large, we see that combat ability scores are the ones that can more easily "break" the game than non-combat ability scores."
This is something that every DM should deal with once it rears its ugly dhead. If the entire party is designed as nothing more than a death-dealing machine, then place them in a fancy-dress ballroom where they have to figure out who the murderer is, using only their charm, guile and wit.
If they didn't take points in those sorts of things, then spank them accordingly.
PC's should always be aware that their DM might pull an "Agatha Christie" sequence (if not campaign) on them at any moment, and pull back on their min/max character imbalance instincts as appropriate.
