Good point. Elimination of capital gains is a hallmark of conservative dogma that I disagree with, simply because the worst taxation is the taxation against earned (wages/salary) income, not the taxes against my investments. Yes I risk that money, and shouldn't be treated like a robber baron for investing, but the tax on CG should certainly be higher than the taxes on my salary, in which I give hours of my life to earn.
That said, treating corporations as individuals is insane. Corporations should pay no taxes. The individuals who run and profit from them should, and they should have the advantage of VERY FEW loopholes.