Great! Great ! Great ! I am already using Xiaomi EU Stable Rom following the guide here!
Just one comment that might be useful:
For all fellows getting mi5s with weird roms check this thread to check if your bootloader is locked before applying for unlock rights: There is a great thread about that in global MIUI forum, that i can not post (because i can not post links yet

)
If you could add this to the guide as step before unlocking you will spare some time for some of us.
My phone came with some weird multi-language version that seems to have been based on official Chinese version. The bootloader was unlocked. I did not know that and applied for unlock rights, which were given to me

but i can not really unlock already unlocked phone

So Unlock tool gives error

Which is mighty confusing
So if you already have unlocked phone, you can skip the unlock step and continue with TWRP...