It's the only way of approaching it, I think. To make Buffy into an icon, proper, like Bond, or the Doctor. The eternally female and kick-ass. ;)

This was my way of thinking of it when I heard the news honestly. I won't be holding my breath, or rushing out to see it, but the idea that they're doing the movie at all keeps the idea of Buffy the TV show present in pop culture. And to me, I feel like that could only be a good thing, It reinforces that Buffy has become an icon for more that just the cult fans who remember her, but to the wider public. That just makes me smile.