As it stands, income gets higher tax than capital gains. Capital gains are taxed at half the income tax rate. So people who make most of their money on capital gains are 1) very wealthy 2) paying less tax than poorer people who rely on working for a living 3) incentivized to keep their money in investment vehicles and out of circulation.
I'd suggest reversing it and taxing capital gains at the full rate and income tax at half. This is how it's done in Switzerland I believe, if you want a case study. They seem like they're doing okay.