That's a suspected goal for her, yes. Alternatively, she could be assembling the Dark Avengers.

Oh wow I didn't realize this

I think after the passing of Wiliam Hurt it's going to be Val creating the Dark Avengers/Thunderbolts and we can name the first members: Yelena Belova and John Walker. For the rest I don't know, but Black Widow isn't going to be the last appearence of Val...

I don't want Yelena to be evil! But if she does turn out that way, oh well

It's all just speculation so far

1) That's a theory, not an opinion. It's not a personal view on a product; it's a plausible, fact-based belief.

2) That's definitely the intention. I wouldn't be surprised if she's the "Nick Fury" of anti-heroes for a while, bringing together villains and anti-heroes to fulfil missions.

I have a theory that Zemo is the one funding her, so he can rival the Avengers again, but with power this time.