I agree, although I also agree with Marisa that not all of her movies have been terrible, they just haven't had the acclaim that BTVS did.
Yeah, there's the double-edged sword (see what I did there? 🙂). Her work as Buffy has been lauded over & over, and while it's a blessing to be involved in such a popular show for so long, there is always the risk of typecasting. However, I don't agree that it's too late for her- she's still relatively young, I just don't think she's found her "next big thing" yet. I mean, Alyson Hannigan & David Boreanaz have gone on to star in other very popular TV shows. Maybe it's a good move that she's trying to come back to TV, maybe it's just a better "fit" for her, although from what I hear movies are easier on actresses with young children than serial television is.
As to whether I think she has regrets, well I'm not her, so I can't answer that. 🙂