silkfor gave the best advice and is dead on accurate about the alt thing.
If there is any players from notably good guilds with achieves on their main, let them go on alts. They are much lower risk than a random bonehead. I found myself in this spot when i rerolled on illidan. I had to beg to get into some pugs and tell them to armory my main (who was the exact same class/spc). Eventually i got into a few and always surprised the leaders, enough so to even get an invite to a guild that is 7/7 now