The way I would see it - a buffbot following you in combat would die in seconds - squishies are always the first targets and if there is no-one to guide them, they're as good as dead... But having a toon inside the hospital, spamming heals might not be a bad idea 
[b][color=blue]Coldest War /[color=red]/ Omega Patient[/b]
[url="http://www.the-cow.net/"][color=red]The CoW Network (Blog) /[/url][url="http://www.collegeofwar.com/"][color=blue]/ College of War[/url]
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The way I would see it - a buffbot following you in combat would die in seconds - squishies are always the first targets and if there is no-one to guide them, they're as good as dead... But having a toon inside the hospital, spamming heals might not be a bad idea
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Even when my main has grant invis and taunt?
I was mostly thinking of having it in the hospital so that I can get some buffs after dieing and get straight back in the action.
Everything else than Stalker (when on Villain Side or Warburg) is a waste of stealth powers - the stealth cap for Non-Stalkers is half of that of real Stalkers. Which pretty much means that Heroes, who have enough +Perception going (to fight the Stalkers), will laugh at the pitiful attempt to hide and have the character for lunch.
[b][color=blue]Coldest War /[color=red]/ Omega Patient[/b]
[url="http://www.the-cow.net/"][color=red]The CoW Network (Blog) /[/url][url="http://www.collegeofwar.com/"][color=blue]/ College of War[/url]
You pay for 2 accounts, go for it. You'll still be less effective than if it was a real player behind the corruptor, so I don't see why anyone should complain.
Now if you go back to your hospital mid-fight because your life is orange/red or because your buffs are out - that's bad form IMO, but to me it's bad form to run to hospital unless outnumbered, anyway.
I am someone who has a two Co* accounts. I mostly pvp with my villain Blind Minotaur in the zones. Teaming, on the villains side at least, is not the best. And even when I do get a team buffs from the corruptors aren't exactly free flowing.
I was thinking recently of the possibility having a support toon on my second account logged in to provide me with a constant stream of buffs. I could even spec the toon so that I can set it on follow and have it following me around the zone with the buffs on auto.
Would this be considered "bad form"? Could it even be considered to be cheating? Does anyone else do anything like this? Is it a pain in the...?