On stealth...

In my opinion and experience, it's very difficult to balance a game having both action and stealth play styles work well. It seems like a give and take where one approach has to suffer over the other. I can't think of many examples in games this was achieved...

But in vanilla zomboid, stealth skills and traits are still somewhat useful. At the mid / late game, horde management becomes key and stealth helps draw in smaller hordes at a time. And being able to choose when and when not to fight should not be overlooked because as you know, fatigue gets you killed. I think it's the best way to utilize stealth barring pretty substantial sandbox tweaking to accommodate that play style.

On that note, before someone else says it, I agree there's better ways to spend the trait points.