Is it a good idea in general for most? No clue. Is it a good idea for me personally? Yep, because i make significantly more than my husband. So, ummm... yeah, purely selfish reasoning on my part.

As long as they don't make it mandatory for couples to file that way, i don't see what the problem would be. Couples could choose to income split, or file separately. And they should be able to reverse the decision - i.e. maybe income split for a couple of years, and then if the lower-income spouse (everyone assumes it would be the woman, but, as i've stated, in my case, it's the guy), they should be able to go back to filing as individuals.