Red Velvet useful rates

My ranking of how useful the Red Velvet members are. Judging by singing, visuals, dancing, rapping (if the member is a rapper), performance, and personality (includes variety shows).
Let's begin!

Irene
Singing: 3
Dancing: 9
Rapping: 4
Visuals: 10
Performance: 7
Personality: 9
Total: 7

Wendy
Singing: 10
Dancing: 4
Visuals: 7
Performance: 8
Personality: 8,5
Total: 7,5

Seulgi
Singing: 9
Dancing: 10
Visuals: 9
Performance: 10
Personality: 10
Total: 9,5

Joy
Singing: 7,5
Dancing: 6
Visuals: 7
Rapping: 2
Performance: 7
Personality: 3
Total: 5,5

Yeri
Singing: 0
Dancing: 6
Visuals: 10
Rapping: 0
Performance: 5
Personality: 4
Total: 4

Overall:
Singing: 6
Dancing: 7
Visuals: 8,5
Rapping: 2
Performance: 7
Personality: 7

Member's Ranking:
1. Seulgi
2. Wendy
3. irene
4. joy
5. Yeri