When it comes down to it, the marks are in the evidence, and how you tie that to your ideas. Strong links are far more important that a unique idea.
I'm not saying don't pursue it; and I'm sure that's academic sources that would support such a reading. But it's not going to be easy, and you may...
I get what you mean, and I don't have any critics on the top of my head to point you to. But, you have to be able to support this with textual evidence and examples from the play. Just having an idea about the play, while totally useful if you're interesting in staging the work with that as a...
The nature of existence is well trodden territory in post-modern and post-dramatic stagings of Hamlet. The fragmentary use of text in Heiner Muller's Hamletmachine (which you can find on google) for example. Or the radical restaging by Peter Brook as Qui Es La.