Good idea or bad idea? Limiting Tespia to have it?

I don't really know how the KMS tespia works so I'll base it off what I saw from ISY/SYEP. Make it similar to the original where X amount applies and Y amount are chosen. After its finished, look at what contributions were made in Tespia. Those who actually made an effort to find and report bugs will be put on a "reserve" list for future Tespias. When the next Tespia is about to be opened, send them a email asking if they'll like to participate again. And they keep sifting through each batch until its about 50:50 "trusted" testers and people just messing around. Or they could just do what Blizzard does and have some COMPETENT internal testing.