Hello Walter,
Think of what it provides as very similar to what ddoc does, except that instead of being in a human-readable format it would be a machine-readable one.
If that's what you are planning, I can tell you right now it's not enough. Much of the things IDEs need is not present in ddoc. Just off hand, I'd say more than 50% of the IDE features I use from C#/VS would need (much) more than ddoc has. What would be better is a dump of a fully annotated AST from just before it's passed off for optimization and code gen.
