I am of the firm opinion that skill is more valuable in a fight than a good weapon, a huge aura pool, or an overpowered semblance.
Each of the latter things are tools that all require skill to use, just like in real life. The best thing about skill is that it is a gift that never stop giving. No matter what, there is always something to learn.
Skill breeds confidence. Skill breeds success. Skill builds a healthy mind, body, and soul in a fight.
That's why hunters and huntresses beat the Grimm. They work hard day and night to beat the Grimm. They have determination. Despite being smaller, weaker, and more fragile than most elder Grimm, they still succeed because they use their skills, together or apart.