Haha. Actually i quite like China Rom Official. but dont update to the latest 7.2.3.0 , heard my friend say got some problem. Just use the 7.0.16.0
Firstly, It is compatible with LTE for Maxis and Celcom for sure (digi not yet try).
Secondly it is for China, with a lot of optimization from the origin country of MI and their themes store are better.
their fonts store are also better . I heard the China Rom are faster and more fluid than global ones because of their community support and from using the China ROM my 2GB/16GB MTK version is still very fluid with 2gigs of storage left.
I dont know about you guys but I actually use the Music , Video App. MI Music app is like free Spotify when you have WIFI/internet burung hantu at home. The Video App is nice too if you like the song competitions series that is all the rage on Facebook although some movies are free but connections might be a bit problematic. I use the MI store too, to see the prices of MI stuff that I cannot buy but its fun just to visit the store. See when the next Flash sale is on.
The ones I dont use are those Cleaner Apps , MI finance (no $$ haha) and just keep it in the folder with Calculators , 2D barcode scanners and the rest. It helps too if you have a MI account tied to the phone and 30 or so Mi Credits to buy themes and things.
Overall I would say as a chinese educated person and a cheapskate , I enjoyed the China Rom immensely because there are things on there that is just free (as long as you have wifi or internet burung hantu) . I might try the snapdragon version when it comes out or wait for MI 5, but I like the back fingerprint unlock better simply because it is easier and more logical. it unlocks faster than IPhone 6 and sometimes Note 5 also lose.