No skill is useless indeed, they all do something. Some of them just do it way better than others.
Even some good skills (like uncanny evasion) are completely outshined by others (like chameleon cloak).
So if you are replaying the game or just a "theorycrafter" right from the beginning, you will only use a small portion of all skills, because you only have a few AP per turns and putting point in Memory is costly.
Last edited by HeyHeyMyMy; 04/11/17 09:26 AM.