User blog comment:Katgar/Pagle the Gold Miner/@comment-1330314-20140711101402

While gold scalings sound cool on paper, the mechanic itself is antithetical to a lot of good gameplay: it encourages you to hoard gold, rather than spend it on items, and encourages you to get gold by any means necessary, which includes killstealing and AFK farming while ignoring objectives. The mechanic itself is also super-snowbally: if you're ahead, your lead will just increase further and further without requiring too much good play, and if you're behind you'll have trouble contributing anything significant to your team, especially if you sink gold into otherwise helpful items.

Similarly, a gold cost to your spells is not something you'd want: if you're behind, or if you just spent all of your gold on an item, you either won't be able to cast your spells at all, or casting spells will deny you access to other important items in your build. A gold theme is nice, but you should try focusing on mechanics like gold generation rather than gold spending or scaling.