Smeags on 14 May 2010
Yeah, the Sentry had pretty much been an attack dog for other Marvel heroes/villains to control.
Hulk on a rampage in New York? Send in the Sentry.
Asgardians overwhelming your forces? Send in the Sentry.
To me he just seemed more like an ace in the hole for others rather than his own person, which was why I never really took him seriously. I mean, heck... even Moonstone (Ms. Marvel) was more interesting than he was. 
EDIT: Glad it was Thor who took him down though. After the Void took down Asgard and Loki... there could be only one person who could do the deed.
