Bill Walton played 468 NBA games and I think he's in the HOF. He, like Yao, had his career cut short by injury. Of course, Walton had a stellar college career (does that count), plus led Portland to the title in '77. I think he was also on the bench for one of Boston's title teams too.
Eaton was an interesting player...a defensive presence for sure. But honestly, I don't think he ever was one of the best players in the NBA and it would be real hard for me to see why he'd go in the HOF. He only was in one all-star game and never higher than 13th in the MVP voting.