Perhaps in way in the future were we have a new Switch that is powerful to have games in 8k... but now your statement... no offense, a bit "anyone can dream" but also laughable. What is the purpose for Xenoblade being 8k? As long as the gameplay plays smooth and especially enjoyable, I'm ok with it.
I actually have made a bit of a criticisms on Digital foundry's XC2 handheld graphics comparison video...
and I confirm that XC2 does have resolution and frame drops....but only in Gormott that felt very severe... other areas like Uraya, Mor Ardain, and Leftheria didn't have any huge difference.
And FRICK FRICK FRICK, that Territorial Robart is probably the most b****a** unique monster I've fought.... I remember I tried to break this stupid beast many times bu the stench is just hard to get over. and not to mention he has an attack you will give you tons of damage, perhaps this is because my level is still too low, but to some extent I digress. I already over level 75 and that stupid monkey is lv 81, which we do have some chance if we successfully did those Blade combos.
I always tend to take the monster down not matter how many tries, but it's late here... so I have to go to bed...