@Meddler: Are there any plans in the near future for a Champion with boosted gold generation?

Ashe, TF, GP and Draven all have increased income compared to other Champions due to their kits, but it seems to be a mechanic that Riot is testy on implementing. I think "increased income" could be used to great effect on a thief Champion (as in, a Champion who steals for a living, and didn't pick a new occupation later on).

If you were to implement such a Champion, what else would be needed to keep it fair? How much of a Champion's power budget does bonus income actually take up?

And what are your thoughts on a thief archetype? Too vanilla, or is it explorable?