I manage to get a Nintendo Switch like experience playing WoW using a Surface Go, an ipega pg-9023 controller, consoleport and joy2key to map any action I would need to be able to do onto the controller. You can check out videos of the kind of performance I can get from it at minimum graphics settings and 50% resolution scale. It’s adequate for questing and up to 5 man group content if you’re ok having minimum graphics settings for the benefit of being able to play WoW while you’re on the go…
I recommend getting a model with built in LTE and a dedicated cellular account for relatively stable connection on the go so it’s not cheap, though for me once I paid for the hardware, the second cellular account only costs me an extra 10$ a month.
What’s the use case here? Long commutes. I have a laptop with discrete graphics that can run WoW much better, but once the battery runs out after 2 hours of gameplay, I am just lugging 2 kilograms of laptop for nothing. Whereas a Windows tablet like the Surface Go together with an extending attachable game controller and mapping actions using consoleport and joy2key/wowmapper will last me the whole day if I use a decent external battery with USB-C output, like my Anker 20100 with USB-C which I originally bought for my Nintendo Switch. By itself the Surface Go can only run WoW for 2 hours like my laptop, but I can get an extra 3-4 full charges from my battery pack and thus get all day play if needed.
When I get home I switch to my proper gaming rig with 1070 and i7 8700 with ultrawide monitor, but I can still get questing done to pass time on days when I am away from home spending hours in public transport with nothing better to do.
I imagine the GPU on the Nintendo Switch is much stronger, so as far as processing power the Switch could probably run wow better than the Surface Go, but Blizzard will probably never make it happen themselves and even if they do they will probably have separate servers like with Diablo 3 which is totally lame. I want to be able to play with my friends and progress the same characters while I’m on the go, otherwise I would just play another game on my Switch.
So I say let them be short sighted like that, their problem. Me? I am getting handheld WoW right now using this method, and as Windows tablets become stronger and cheaper, it will only get better. Intel are now working on mobile chipsets that have 3-4 times stronger integrated graphics, so the next gen or at worst the one after that of Windows tablets will be able to run WoW at levels approaching what a laptop with entry level 1050 discrete graphics can do today - but in a form factor that gives you handheld gaming option for casual PC titles, and surpass the power of current day Nintendo Switch.
So I predict in one to two years we will start seeing casual gaming tablets and handheld consoles like the Switch will have to do a lot better to justify not having access to PC casual titles.