OK so I benefit from the partial capital gains exemption, the dividend tax credit and to a small extent the foreign tax credit. Lucky me. I'm also lucky enough to pay a rate of 54% on my income over $200K. As you correctly stated, eliminating the dividend tax credit and foreign tax credit would mean that I would be DOUBLY taxed on such income. I currently pay about $100K in income taxes each year. How much is enough? 
Most of my income comes from investments, so I can basically live anywhere, and I would seriously consider moving to a lower tax country if out tax system becomes even more punitive. And how would that increase revenues for the government? Raising any of these taxes is really dumb and self-defeating. The left just doesn't get it.