Registered traveler

First post ever. I travel a majority of the time for work. Recently the airlines have introduced the registered traveler program for people like myself. Two requirements were an eye scan and a finger print, which I thought were ridiculous, and an extreme background check, so I did not register. But thinking forward, will this be a common approach in the future if this program is successful? It may become commonplace one day and you would be inconvienenced if everyone else was passing you in the security line at the airport because they registered or being served first in other locations for being a registered "whatever"?