I don't think they're too hard at all, especially if you mix your group to include more than 2 professions.
That's part of the problem. Let's face it, everyone rolls dps - and when i did a flashpoint with 3 dps and a healer; I was beginning to think I sucked as a healer. Then I ran it with a tank and 2 other dps, and it was black and white difference.
That's fine and all; but as I said earlier - you can't always find a perfect group.
I'd rather have flashpoints being hard like the 4 man heroics, and the 4 man heroics really be more then the 2+ heroics.