The founders departed very early after the acquisition, like Rus and Dom. None of the 'top executives' were ever the original visionaries that created the product to begin with.

It's sort of shocking that after Jack left but hailed back to save Twitter, that the board didn't have more wherewithal to retain the founding team of Vine. Textbook post-acquisition problem.

I agree with other commenters that they should integrate Vine into Twitter. Like Instagram and video (or Facebook and Facebook Live), there's really no reason for it to be separate. Twitter needs better content generation tools at it's core. It's really starting to feel like a washed up RSS aggregator and nothing more.