Bring on the hate.
You accuse Bioware of thinking less of their Origins fans while it obviously couldn't be farther from the truth. Those fans are what made the series happen, and established Thedas as a force to be reckoned with in the world of gaming fantasy. From a fandom standpoint, players who enjoyed Origins are absolutely in the majority. From an business standpoint, there's no denying that DA: O vastly outsold DA2. Consider the complexity of the issues that would need to be faced if the Warden needed to make an appearance. Hawke has an established voice, story and personality in the lore - a luxury the Warden does not share. Say what you will about Hawke, you may have hated the game where s/he starred, but s/he is far from being a bad character to bring back to the limelight - or a bad character at all for that matter.
If you honestly can't stand the character on the notion that you would rather have the Warden return as opposed to Hawke, you're really failing to see the story-telling value of either characters.