I'm shocked at this info coming from a Guru like you
BootLoop should not be an option and No Backup
I'm still new to HTC phones so I'm pretty happy with each change to the Sense environment. It's always evolving into things i had never thought of in a launcher
If you open up default.xml under system>customize>acc and go all the way to the bottom and edit the line with sku_id>42< and change the number to 7 it gives you the AT&T icons.
and if I remember correctly changing it to 11 will give you the Tmobile icon set (4G/LTE hidden when on Wifi) my favorite