This won't work. The gold badges are mostly for specific languages and runtimes. It is almost impossible to get gold badges for others. Lets check my stats: I'm at over 600 for encryption right now and over 400 for cryptography. Nice, but after a lot of questions, not even near a gold badge.
Now almost all of the crypto questions are also tagged with a specific runtime; if they aren't they are mostly off-topic. However, not everybody with a gold badge for - for instance - Java knows much about crypto. So you get an "expert" with a gold badge closing a question that can be answered (or, reopening one that cannot be answered). And the actual expert is helpless; the amount of traffic we get for crypto questions is currently already too low to close questions, let alone reopen them.
Now I've just taken my field of expertise as an example; I do think there are many many of these "niche" tags and fields, and I assume (hopefully correctly) that most of the gold badges are for really popular tags. All in all, an interesting idea, but I don't think that this will work as intended.
Unrelated, I think that people with a lot of rep already have too much impact on close votes - there are many sheeple that simply follow the leader.
