No. Designing in the browser lets you iterate on one idea really quickly with very little effort, but doesn't lend itself much to designing many very different directions in parallel.

In a perfect world, you can either do everything in a really advanced design tool, or switch between code and Photoshop quickly and frequently. Code is good for knowing how something feels and finding weird edge cases, but that's it.

While I outlined some of its high-level features above, the tool I'd rather the team use unfortunately does not exist.