OK now that we have heroes and can customize their weapons/skills lets take it a step further....

What about the ability to actually switch between your hero and your character completely?

You're playing your ranger but you want to play as a warrior for a little while...
Just switch your primary playing character from your toon to Koss while questing.

The AI takes over your character and he/she in effect becomes a hero.
XP is unaffected and drops - well you get whatever would drop for Koss.
Heroes level with your character so it's not an unfair advantage or anything.

Anyone think this is workable/unworkable?

I'm sure there's some issues with this but is there a showstopper?

Of course you should only be allowed do this with classes of chapters you own - a small boon for owning all chapters.