Well the majority here has seen the "theory blog". (As that is what it looks like, especially as first blog) But what there is said has it worked out well and is it actually working?
Also, I find it quite odd that you say to only need/want a few people to test the Alpha. When possibly the biggest feature of the entire game needs at least a couple of hundred people in order to properly test. Though that is what comes to mind when thinking about testing such feature. So I'm not sure how you guys are planning to test this, as obviously getting a couple of hundred reliable people to test the alpha at the same time seems to be quite hard.
So perhaps some more information about that? About how you will test the functionality.