Please don't be biased!
I'll see which member has the most votes, and then I'll pick the best comment that will be feat in the article!

Most Likely to Succeed After SNSD:
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Taeyeon is a very good singer. She could do a solo career on her own.

She Will become an actress

She have lots of talents

mc, variety shows, model, actress...

and she said she wants to start her own fashion line

Taeyeon

My top 3
Yoona- most likely because of her acting career and her popularity wouldn't die down easily.
Taeyeon- any company would accept her anytime because of her singing talent.
Sooyoung- MC, model, ect.

Most multi talented member.

for me is Taeyeon! she is an excellent singer, and it would be a great soloist

Sooyoung , one of the most well-rounded members in singing , dancing and rapping she can also act extremely well and since she is tall , skinny and beautiful , be a model. She also has good fashion sense which may help her if she wanted to start her own brand.

either Taeyeon (solo artist in singing), Yoona (can be a successful actress) or Sooyoung (an mc or actress)

for sure

Yoona - she has a talent (especially in acting) and popularity
or Sooyoung/Taeyeon.

1.Yoona
2.Sooyoung
3.Taeyeon