Hey Boyce, I don't think such a beast exists or at least I have not found it. There's the usual suspects such WA, WS, Vinous, Decanter, Jancis and so on. Otherwise I find it segmented by country if even that "macro" of a level.

I think the task is so daunting that no one can really take it on and the extant information is proprietary and thus cannot be aggregated legally.

That said, if there's any particular region you are looking for or might find most useful I can check my bookmarks for something of use.