I wouldn't.
Really - just look to the iPad 3's reception as a inkling why Apple did it this way. In the iPad 3, they went display first - did everything they wanted to with the display, but found they need to compromise in other places such as the form factor.
The result was an device that was considerably heavier, thicker, ran hotter and provided shorter battery life and was replaced only 8 months later. Hell, it wasn't until the iPad Air that Apple finally was able to offer a "no-compromise" device.
I'm just trying to temper expectations here - especially since the rMini is a beast of a device.
You are being very reasonable... unfortunately sometimes there isn't a perfect answer.
I work with high end digital cinema cameras and on those forums we have the same exact kinds of discussions. Some people want more resolution. Some people want faster frame rates. Some people want better dynamic range. Unfortunately, you kinda need a little of everything. The most resolution and dynamic range in the world is pointless if the camera only shoots 8fps. Conversely, a camera that has amazing dynamic range and 2000 fps is pointless if it can only shoot 480p (in my area of the industry, anyway). The problem with the iPad 3 was not that it made the screen the priority, but rather it really made the screen the ONLY focus. I feel like they've kinda done the opposite with the rMini.
The new Mini's resolution is awesome and the processor is a beast, but I can't even play basic games without being really annoyed by the way the screen looks. I realize most people probably aren't like that, and that's fine. But unlike monitors or televisions, there isn't the option between the "budget" screen or the model with exacting specs that cost more. Even more than giving up an hour of battery life, I would happily pay more for a model with better gamut. Give me an iPad Mini Pro with a $200 premium and a perfect screen and I would be first in line. I know that's not their target audience, though (although some people do spend over $800 on a 128GB iPad instead of just buying a MacBook Air

). But even you yourself said that you would prefer a poorer screen if it means maximum battery life and I can barely comprehend that, so clearly we all have different perspectives. The problem is that most of Apple's products these days take a "one model fits all" (aside from storage space) approach.
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16:9 aspect tablets drive me nuts for two reasons.
Oh, they drive me nuts too... I was just commenting because Oppressed was saying the screen size wasn't the same and I was just pointing out that the aspect ratio was different too.
I actually think my dream Apple tablet would be smack in the middle between the rMini and Air's size - a 4:3 retina tablet around 8.6" - but I know that is never going to happen.
And, yes, the gamut would have to be acceptable.
