That might be great but might still not work. The ARM processor class is a mixed up batch and about seven different classes of them. The one in the RT is the NVIDIA Tegra 3 as you probably already know.
The ARM in performance and power consumption is almost the same as the ATOM and that is the reason why they exist. The ARM was designed for Linux and not Windows and even in the Linux world, mostly Android.
Some people have had success by recompiling some programs and use the hack that is out there for the RTs to run unsigned programs. I don't recommend anybody running it and the machine has to stay on all the time in order for the hack to stay in place.
With the popularity of apps in all categories such as iOS, Android, and now the Metro UI, they can make Minecraft and a lot of other popular programs available in a stable fashion which would be available through the Store and you won't having to try to
patch and fix to make it work. In most cases, that doesn't turn out right anyhow.
All they have to do is contact the makers of Minecraft and chances are, they are probably already working on it now. These tablets took off like a rocket on the market. Microsoft is now working on making "ALL" Metro UI apps to work even with the RT and
not just a limited set.
These first generation machines are working on shaky ground already and barely work "as is". And now you guys are trying to patch and fix programs to work with a look-a-like/work-a-like Windows operating system called Windows RT. This is a canned system
designed and recompiled to work with the ARM processor and is limited to what is available to it. An alternative is to get the SDK kit and try to move code over to run on the ARM. That is a thought. It would be better for the creators of the program to
do it because they are more in tune with the code and can probably do it pretty easy providing they aren't already working on it.
These apps take time to make and just can't be just ported over. Some of them have to be re-written from the ground up. But in the end, you get a product that will work almost exactly like the other versions.
If you think things are getting complex now, wait until Qualcomm processors come into the picture (later on this year).