Well... I'm not interested in building a ported enclosure in my door.
This may never have occurred to you, but if there are real world examples that go opposite your beliefs, your understandings are flawed. I don't doubt you've had poor experiences, it's just that the conclusions that you've drawn from them are false. It's not just me getting excellent performance out of low Q, low Fs drivers in a door.
And hells no about those Arcs. They're nice woofers, but only an idiot or brandwhore would buy them for anything more than ~$120 - minus the sticker, of course. That said, I'm sure they're great in a door. Just not the type of speaker you'd run without an XO.