I'm not really great in judging tactics or abilities, so I'll give just my opinion!
I'm Sveta fan, not anti W, btw
I have seen about 6-7 Sveta's matches, so I can judge her a little!
Sveta has an amazing forehand. When she's ON, power & placement are great!
She has good, solid backhand, and moves really well!
As Sarah said, she added a lot in tactics department since the begginning of this year.
And she has good volleys when she plays well!
She prefers to play aggressively!
Her problem last year, and in the begginning of this year was inconsistency in matches, She payed like 5 good points, all winners, then would miss 4-5 shots easily.
She didn't do that in Venus Dubai match, and really improved on that!
So if Sveta keeps her focus, it should be a close match!