I'm going to be slightly harsh here, but personally I feel this question is needed.
What does your ROM have that is different than the other MIUI ROMs out there?
Just a question...great job on the ROM, it's great seeing so many people interested in the X10, I'm just wondering because there's a lot of new MIUI ROMs coming out which are pretty much exactly the same except the theme...
Also, for the data disconnection issues, try basing the MIUI on the new CM7 FXP-30b, and try out Luke's kernel...there seems to be no data disconnects with that kernel.
Current Device: Stock Samsung Galaxy S3 I9300
Previous Device: SE Xperia X10i