ECW was once the most innovative federation in wrestling history. They did things that the more family-oriented WCW and former WWF wouldn't think of doing. Need proof? Look at how much the big two ripped off ECW. StoneCold Steve Austin owes his whole gimmick in the WWE to ECW's Sandman. What ruined ECW was lack of exposure and big money. This new ECW is just another WWE moneymaker. Believe me, there's a HUGE difference between today's ECW and the previous incarnation before they went belly up.
As far as Shawn getting booed goes, Canadian fans will never get over the screwing of Bret Hart. Granted, Vince did what he had to do to protect the WWE title from going to WCW, but he went about it a shitty way. And considering it was done to one of the greatest wrestlers of all time, and a Canadian native to boot, the fans have a right to hate all parties involved.