Gigabit Ethernet is certainly desirable, but if it adds significantly to the price we could probably live without it for now, especially on a single tuner receiver. Personally I'd say it's worth an extra $10 or $15, maybe a bit more.
Dual tuners are nice but in North America they are really only useful if you have multiple dishes, OR if you happen to want to watch/record two signals off the same dish, but in the latter case you get into the issue of how to connect the same dish and LNB to both tuners simultaneously. I would definitely prefer a dual turner receiver over a single tuner model, but if the price was significantly higher I'd have to think long and hard about it. If it didn't add that much to the price then it would be pretty much a no-brainer, since I do have multiple dishes.
4:2:2 - As I said I am more interested in being able to record this rather than watch it live. Live viewing of 4:2:2 is a feature I expect to see more frequently as processing power comes down in price, though. I remember that in the year 2000 the computer I had back then struggled to play MP3 audio smoothly; today we expect our computers and even our phones to play video without stuttering.
ATSC is a feature that I would not use today because I have a HDHomeRun Dual device to receive OTA signals, but back before my Diamond receiver died I used it all the time to watch ATSC. So I cannot say that no one would want it; I just wonder how many would actually find that a desirable feature, and how many would think that it would be better to use a different piece of equipment for that purpose. If you are using satellite because you can't get decent OTA reception where you live, then an OTA tuner is kind of useless. If you have a HDHomeRun or one of the Ceton units, then an OTA tuner probably won't be of much use either. But some people doubtless would buy a receiver with an ATSC tuner over one that doesn't have one, even at a higher price.
Good things to keep in mind. I guess it's a question of which features add significantly to the value without having an excessive cost for the value received. There are psychological "price points" on any product; $50 is one, $100 is another, and if you go over $200 then for many people that falls into the category of "major purchase", and there will probably always be the guys that import stuff (some would use a different "s" word) from China and sell it for under $100. For me all three of the factors you mentioned would be important, so I'd definitely be balancing the price against the features and quality. A receiver that had the features AND the quality would definitely induce me to pay more than the $100 price point I mentioned, but anything around or above $200 is probably not going to be on my shopping list no matter what it includes.
