Few things.....
1) You blame HTC and Samsung for focusing on Android because that's where they make their money, but then go "so what?" when I point out that Microsoft bribed Nokia to stay exclusive to the platform..... and they still didn't do it. They stuck their middle finger at Microsoft. Did you not notice the sudden drop off of Lumia 520 sales after the Nokia X, did you? If Microsoft hadn't bribed Nokia, they would've also focused on Android too and left Windows Phone behind. This idea of Nokia being more committed than other OEMs is slightly ridiculous IMO. They did what they did because of business. Nokia is no different than Samsung or HTC except that they were paid massive amounts of money to stay exclusive, and then didn't. Yeah, they were super dedicated weren't they lol?
2) I'll give you the 1020, but there isn't really isn't much that is innovative about the 1520 and 1320. Maybe the Lumia 1520's DD5.1 audio recording could be considered kind of innovative, but I have yet to hear anyone express any more interest in it after learning about it. You dislike Samsung, but they're the ones bringing innovative phablets with things such as their S-pen. That's why people want a Galaxy Note 4 running Windows Phone, because if it ran Windows Phone, they would buy that over the 1520. All of Nokia's "innovative" features at the high-end hasn't helped sales hardly at all. I hate to burst your bubble, but I don't think you realize what Nokia's camera tech is. Things like "Preview" are just fancy words for the way that they process photos. There's nothing special about it, that's why Microsoft only bought the brand name and didn't care for the camera technology. The real numbers have come from the Lumia 520 and that has mainly been because of the Nokia brand because of their past phones.
3) This "scraps" thing is kind of getting old. For the last time, the hardware team didn't make an Android phone, they made a phone and the software team just put Android on it. It's like saying that you can't buy a Dell, HP, Asus, or Acer because they make Chromebooks and you want someone "completely dedicated to the Windows platform". You want to know what scraps is? Scraps is ignoring user's pleas for an average sized high-end phone with functions that they consider basic such as Glance and an SD card and going "well, we're about to be sold, so I guess we don't have to put that much effort into a phone". That's what scraps is. I can live with without glance, but the fact that they didn't include an SD card in a decent sized phone forced me to get a 1520 or leave Windows Phone and if I wasn't such a big Microsoft fan, I would've left.
4) I don't know where you get this idea that Nokia gets better support, except for maybe better firmware (because of the aforementioned bribing). In literally every GDR, HTC and Samsung has got the updates first and Nokia has infamously been last. The only reason that HTC isn't getting Update 1 (yet) is because Microsoft dropped the ball and didn't work with HTC before releasing the Developer preview. I know we all love getting updates early, but when we get the update about the same time as OEMs do, things like this are inevitable. IF, and ONLY IF, Lumia phones start getting the Update 1 firmware and HTC still hasn't fixed the problem, then that would show lack of support. The current situation means nothing.