I think I already responded here, but I'll do it again.
Someone who needs an on-going is the Sentry, without a doubt the Sentry. But he needs a good, smart writer who doesn't fuck the character up.
I would be perfect B-)
For any of you who remember:
When Bendis was writing the Sentry and needed a powerhouse, the Sentry came along and fucked everyone up. What happened, when he didn't need him, someone who was able to solo the entire battlefield in a matter of seconds? He made him lose in the most pathetic ways.
For example when the Human Torch overloaded the Sentry with his heat, so that the Sentry had to fly away? What in hells name? The Sentry was in the sun, multiple times without any harm! There are more bad instances.
The only way to get rid of the Sentry from the battlefield, without making the character stupidly inconsistent, is to simply let CLOC (his mechanic servant) tell him about catastrophes on the planet, so that the Sentry could prevent them. Why would Sentry fight the Rhino, who is trying to rob a bank, when there is a vulcano threatening the life of 500 village people? He would fly away to prevent that stuff, while Spider-Man would face Rhino. In the crazy, twisted mind of Bendis he would come up with a solution for the Rhino to somehow magically defeat the Sentry.
I fucking hate writers from time to time so bad for their stupid ass bullshit and overall lazyness.