Yet another case where you think you know better only because you aren't considering all the variables and the associated costs.
No, heat does not "go up" at an acceptable rate unless you have huge, heavy, expensive heatsinks. Merely add some fans and heat goes any direction the fans blow air, and it takes very little fan forced airflow to exceed what you'd get from a design as pictured where you depend on hot air rising.
Plus, such a design would let dust settle into the system when not running and would be thwarted by people stacking things on top of the case. It is a good use of space to stack things when you can, unless your case is cheap junk and can barely support it's own weight and yet if this is true, that much harder for it to support massive passive heatsinks, the motheboard tray would flex in addition to the motherboard itself, and you'd have to tiptoe merely moving the system to avoid damage.
You fail to realize that there are people who have been testing these things for years and have found what we have is cost effective and works fine, even without the high number of 120mm+ fans some people are throwing into their cases because the cases are cheaper to make with less metal by putting fan holes everywhere, then they can call it a "feature" that you have a swiss cheese case, but at least this allows running fans at low RPM for a noise decrease if done right.
Also, no, lower power consumption components should not necessarily be put at the bottom, rather the most heat sensitive, lowest thermal margin components should be put at the bottom so the air they receive is not preheated by anything below it, if the above did not trump your idea, except there are also considerations for things like motherboard data trace routing and length.
What you pictured would also require a larger motherboard and thus larger case, would put optical drives down at the bottom where those who use them, usually won't want them, does not include anywhere for the PSU to go so even more case space wasted, or did you want to just put it above the CPU? That is already where it was, but again there is a fan involved, not depending on "heat goes up". Either way, making systems even larger is simply a nonstarter.
You seem to find everything to be an overheating problem which is a sign you need to pay more attention to proper design rather than trying to deviate even more from it.
Stock speed operation in a properly designed case with existing tech does not require water coolers unless you're in an extremely hot ambient environment, or picked some poorly designed parts which should be returned as unfit for purpose if they overheat in a properly designed system.
If you prefer to learn things the hard way, start doing your own experiments instead of expecting us to agree as if that changes anything.
The bottom line is that any configuration is a trade off but once you add fans, you can get acceptable results without the concessions of arranging everything around the idea that hot air rises. The last thing I would want is some much larger, much heavier, much more expensive, way to achieve nothing more than we already have.
If what troubles you the most is how to keep a video card cooler, pick one with a better heatsink or throw a fan on the case side panel. Time tested, this works. You can spend more time and money to get temperatures down a little but it is not a contest where the lowest temp wins, it simply needs to stay stable and have an acceptable lifespan.