Can you elucidate on your point about Zerocoin? I'm really fascinated by what I've read about it, but admittedly don't have much of a basis to evaluate on.
The idea is good, and it would actually work as it currently stands. The fundamental issue is that the signatures it creates would be massive in comparison to the lean scripts that the Bitcoin network uses internally. There's certainly ways of making it work, it just needs a little more baking before any of the Bitcoin developers would even consider using it.
