Well, your guesses are all incorrect.
The "dual climate" does work decently well, though we don't actually use it that often. Seat warmers do a better job if you're actually cold (and my wife usually puts hers way higher than mine).
> Blasting heat is usefull when e.g. you don't have windows, blasting cold is usefull when you have raw meat in the back and you don't feel like freezing too.
You can still "blast" heat or cool: by turning the temperature way up or down it goes to "MAX" (I don't recall exactly, but something like below 16 or above 25C) and the fan will also run at full speed.
I'm not sure how manually "blasting cold" to keep raw meat in the back cold also doesn't freeze you in the front, or what that has to do with auto mode, but we typically don't have groceries in the car for more than about 20 minutes and don't worry about it. I know people who have a much longer trip to get groceries and they use a plug-in cooler; that seems like a more sensible option.
> auto mode [...] messes it up and I just want "cool" or "hot" air not to fiddle with bad UIs on dimly lit displays I can't see in the glare from the snow/blue sky to figure out the "right" temp to reconfigure too...
Just not reality, in my experience. Auto mode just works. I've been in other cars where it's bad so I understand where you're coming from. I adjust a couple degrees up or down, usually based on what we're wearing, and that's it -- and no need to use display or touchscreen for this.
On the display: About the only time it's hard to read is if there's direct sunlight coming through a non-tinted window. I usually drive with polarized sunglasses and then it's basically never an issue at all.