The new Wealth skill is an interesting idea, but totally impractical for most folks. 4E just isn't designed for new skills, and introducing a new one would upset the balance.
My suggestion is a group of new feats instead. Here are a few possibilities:
Noble's Purse
Requires: Training in Intimidate
You have the bearing of a noble, can move in noble circles, and accumulate and wield power and resources as an aristocrat. Imtimidate rolls determine success in attempts to wield power and influence for specific purposes.
Love Can Buy Me Money
Requires: Training in Streetwise
You become a beloved figure to the people of the streets. While you might appear humble, the pull you have with the masses allows you to wield surprising influence and resources toward your goals. Streetwise rolls determine success in attempts to wield power and influence for specific purposes.
Know Your Mark
Requires: Training in Insight
You always know who's got what you need. You can just understand people. And you understand where to go to find the coins you need and the favors to ask to procure what you want. With a few well placed requests, the wealth and influence of someone of much greater advantage is at your command. Insight rolls determine success in attempts to wield power and influence for specific purposes.
My suggestion is a group of new feats instead. Here are a few possibilities:
Noble's Purse
Requires: Training in Intimidate
You have the bearing of a noble, can move in noble circles, and accumulate and wield power and resources as an aristocrat. Imtimidate rolls determine success in attempts to wield power and influence for specific purposes.
Love Can Buy Me Money
Requires: Training in Streetwise
You become a beloved figure to the people of the streets. While you might appear humble, the pull you have with the masses allows you to wield surprising influence and resources toward your goals. Streetwise rolls determine success in attempts to wield power and influence for specific purposes.
Know Your Mark
Requires: Training in Insight
You always know who's got what you need. You can just understand people. And you understand where to go to find the coins you need and the favors to ask to procure what you want. With a few well placed requests, the wealth and influence of someone of much greater advantage is at your command. Insight rolls determine success in attempts to wield power and influence for specific purposes.