Wow, this is so much better than Trello. You implement exactly what's missing: a "planning" view (Trello's card view sucks so much) and task tracking. Congratulations.

However, in order to jump there I'd need an import/export feature. Import because I can't manually add the hundreds of cards and comments I have in Trello. Export because, well, you're a startup and I want to know that if you shut down in the future at least I can export my cards and not lose data.

Are those things planned?

Edit: As general feedback, what I'm missing the most from the product are keyboard shortcuts and a sidebar to move quickly between projects.