I fully get that, but it would be much better for the progress of the beta to get actual vanilla boys in there.....especially ones with no private server experience. All of my memories from vanilla WoW come from actual vanilla WoW, i have no memory of how private servers do things so my feedback would be especially helpful. I am no snowflake there are lots of people out there like myself, blizz just needs to find these people (maybe check overall played time or something?) and get them onto the beta.
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Remember, the goal of the beta is the get the "authentic" 2006 experience that blizzard has used as their framework since the beginning of the project. Getting people in from actual vanilla is how you do this. One thing just off the top of my head i want to check is, can you duel in ironforge? In 2006 (and part of tbc) you could start duels behind the right pillar outside of the bank in IF. It would zone you to dun morough so the duel could be initiated, there was also a place in the military ward (by the stairs i believe) where you could do the same thing.
Its stuff like that that is going to make or break the authentic experience blizzard wants, and private server guys alone cannot find this stuff.