Question [Q] Gpe Otg, coming back to non gpe on linux.

Hello to all ! ( and sorry for my english ..)
I just buy a French Second hand moto g which i'm very happy with ... nevertheless the precedent owner installed the GPE edition quite easily.
Nevertheless this version doesn't support OTG (Usb on the go, so as to connect usb key), EAP-SIM( my internet provider propose SIM that connect automaticallt the phone in the Wifi of it's network) or more important for me .. the radio.
This is why i was wondering if those... differences were going to be soon be changed or not envisaged.
In the second option, how to come back to a non-GPe edition, or if i had interest to install Cyangemod 11 ?
All the guide for installing the non gpe installation tell to install a retail us version, will it have an impact from the french version ? And since i'm on linux, moto tools isn't working very well even with wine or cross over !

I know i have many questions but haven't found many interesting things that could help me. Thanks a lot .