Yaarel
🇮🇱 🇺🇦 He-Mage
Since D&D 3e systematized the mechanics of 1e and 2e, the abilities have become the fundamental mechanics that all other mechanics depend on. The abilities do the heavy lifting of game play.I like you thinking and have considered something similar as well. If I was designing things from scratch, I would probably go with four or five stats. This however is one of those things that will never be changed in official D&D.
There is a "deep" need, for these abilities to function well − elegantly and saliently − in order for the D&D game to function well.
Reducing the abilities to four is, so far, the only way that I have come across, to make each of the abilities both disambiguously meaningful and roughly equally balanced with each other. For example, where Intelligence includes Perception, the Intelligence becomes a powerful and appealing choice for many Fighter builds.
I feel, the ongoing need for a better ability system, and now the discomfort of being too heavyhanded about the abilities with regard to races, might be enough to bring about a real reform of the abilities. Albeit, it might happen in a surprising way.
In any case, these four abilities are recognizable to the D&D tradition, and reflect how most players tended to think about them anyway. Especially with the caveats in mind, each ability works exactly like a D&D player would expect them to work.
• Strength (including size and toughness)
• Dexterity (including athletic dodge)
• Intelligence (including knowing things from observation)
• Charisma (including a willful personality)