[citation][nom]scannall[/nom]Exactly how big of a market do you think there is for that? Really. A 15 or 17 inch laptop would be more useful. Tablets are great at what they do, and at the size they are at. But at what point is too big? If 22 is great, then 42 would be better? You could make a backpack for that as well. Not sure how durable a slab of glass that size would be in a portable device though.[/citation]
You didn't ask about the practicality of a 22" tablet, you asked how it would be carried around, so that is what I responded to. How big the market for these is has no impact on what I said nor on what you said. Besides, just because some people might want a 22" tablet doesn't mean that a 42" tablet is reasonable. A 22" tablet can be very useful for some things and no laptop that I remember has a 22" screen.
This is probably cheaper to make than a laptop of that size. Also, how big it is should not change how durable it is. It can still use stuff such as Gorilla Glass and other very durable materials. Also, a backpack that could fit a 42" tablet would not be reasonable. A 22" tablet can fit in a reasonably sized backpack, but not a 42", so bringing that up is not helping your case. So yes, a 42" tablet would probably be too big.
It would be something like a 36.5" by 20.5" for a 16x9 42" tablet. That thing would be more than three feet wide by one and two thirds feet. To have a decent pixel density for the size in comparison with competitors, it would likely need an 8K resolution and a GPU that can handle it. It would need a huge battery (most of the weight would likely be the battery) and it would be incredibly expensive.
22" is a decent compromise, especially if it has the 1440p resolution. Considering that we don't even know what the actual resolution will be, the only thing that you have legitimately complained about is that you don't like the size. In that case, don't buy it. I don't plan on buying it either, but I can at least be unbiased about it.