Samsung has the worst skinned version of android of any phone, Touchwiz is an awful UI and to be honest I'd trade removable battery (that lasts 24hrs) so I can have the unibody design of the One X.
SD Cards aren't going to be in phones much longer, the cloud is the way forward and I find 32gb more than enough on a phone. I can't speak for international versions of my phone but mine has no problems with wifi, battery or anything.
I get what you are saying about the bootloader as that is important to people who want to change and I hate bloatware too.. I wouldn't root mine as I don't feel the need to but people should be given the choice. I honestly couldn't care less about the battery or sd card though, it was a necessity to make the best looking phone on the market and I think in the near future most phones will need to be made this way to make them thinner while improving performance.