Explained community manager 2K Elizabeth:
I talked to the dev team about controller support for BioShock 2, and I want to let you know that we won't be adding this into the game in a patch. The decision not to support the controller was not made lightly, and to add it now would take a complete re-envisioning of the UI that the team worked so hard to create.
I'm sorry for those of you who are disappointed, and I want you to know that your comments and concerns have been heard and will be taken in to account when we are planning in the future.
Prior to BioShock 2's release this week, the company had noted that the shooter sequel would not support controllers on PC in favor of getting "the mouse and keyboard control absolutely right." However, many were still caught unaware, especially as the original BioShock PC packed support for both gamepads and mouse and keyboard.
The PlayStation 3 and Xbox 360 versions of BioShock 2, as previously noted, can be played with the console's respective gamepad, but not with a mouse and keyboard.
As for complaints that BioShock 2 PC doesn't properly support widescreen resolutions, the company has providing an explanation of how that particular issue cropped up again, along with a diagram of how it'll look after the impending patch:
When BioShock 2 shipped for PC players, it altered the vertical FOV for different monitor aspect ratios rather than the horizontal FOV. (For those of you who think in pictures, like me, different views looked like the image below, depending on your aspect ratio.)
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We are fixing the FOV so that it expands horizontally in the first PC patch (currently in testing - I'll be posting more about it when an exact date for its release is set!) That means that now your view will expand on the right and the left if you have a widescreen monitor, and look like the image below.
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We always meant to have our FOV expand horizontally, but a last minute bug fix for a related issue changed this back to a vertical FOV just before ship. We feel rather silly about this, and agree that horizontal expansion is much more awesome, and that you'll have it very soon.
Thanks again to Chris (again, not the one who wrote this article) for the heads up.