China have the features you mentioned but I believe you guys are not aware of the Chinese governments stance concern Bitcoin because cryptocurrency is not ban or view as illegal properties in China. Besides, their online court was said to recognized cryptocurrency as assets but there are still some restrictions involved.

in my opinion UASF has been the worst thing that has ever been introduced to bitcoin mainly because it is incomplete and the way it has been used (BIP148) is a dangerous thing. basically anything that has a remote chance of splitting bitcoin must be avoided at all costs let alone having a very high chance of it. there is a reason why 95% was chosen, there is a reason why consensus exists and that is why bitcoin is still strong. in 2017 SegWit had ~35% hashrate support while UASF had less than 10% and even less node support but people were still pushing for it disregarding the dangers of it. the fact is SegWit was mainly activated because of SegWit2x not UASF.

when we plant the idea of anybody can split bitcoin without reaching that 95% agreement first, we end up with things such as bcash which consequently were also called "UAHF". if you ask me, if you support UASF then you are also supporting bcash. because that is exactly what they did: they had little support from miners and nodes, a small group of people decided they wanted a different thing and they went that way.

this is the only case where i believe we need to be black and white. we either reach majority support from every one (both miners and nodes) or have no fork at all.

by the way i am not denying the problems that the current mining situation has. specifically about pools having the power to signal anything they want without miners (who are connecting to that pool) having a say in it. but the solution should be solving that problem instead of adding more problems. something like this makes a lot more sense to address than issue: https://github.com/TheBlueMatt/bips/blob/betterhash/bip-XXXX.mediawiki