-Multilanguage and multilanguage keyboard
-Nice fast working old market
-Apps2sd with automatic dalvik2sd (best is ext3 with 512-1gb)
Altough ext 4 will also work.
-desire miui/hd2 miui mix
Extra's compared to normal MIUI roms thanks to the kernel:
+Increased 3d performence
+.35 kernel advantages
-Blutooth 60 ma drain
-Some minor things but it is daily usable in my opinion.
-Please report bugs in the kernel thread if possible with logcat