Bluetooth isn't an important thing to most people. Only you. Maybe you would be happier running the stock firmware?
I see it as an old way of connecting and I never use it.
Sorry but you are so wrong.
Samsung Tab 2 specific 7" and 10" models (like P3100) special features are that they include GSM Voice functionality. Meaning can throw away your smartphone at once with bad small screen and start using a tablet as "smart" part but still capable to receive and make phone calls.
7" is a size what fits over 90% jackets side pockets perfectly so it isn't hard to carry with you at all. It as well fits perfectly to pants what has side pockets or even to normal size front pocket (although sitting is impossible).
10" is a size what you can carry well in briefcase, backpack or even in larger than women party purse.
You really want to use bluetooth to make calls as most times you are on move or you need both hands free, even with smartphones bluetooth is much better as cables are always on your way. Earplugs are great for those who mostly listen music and especially for them P3110 and other models are for.
CM10.1 had few weeks ago a patch to give a bluetooth functionality for calls. Even that it looks it broke then the internal microphone but you really don't want to use it in most cases when using P3100 model, as not even most skype calls are done as video calling (example you don't want to be making video call when you are on store, driving or at mall sitting somewhere).
Bluetooth functionality with working microphone / headset is crucial for P3100 owners and very important for other model owners as well who like to carry the device outside their homes.
And it is funny you say it is "old way connection", while there is no newer way to connect a headset to mobile device to make calls than bluetooth.
Cables are WAY older than bluetooth.
And if you mistaken bluetooth for data connection, on that I can say it is just very special case when you need to share internet connection over bluetooth and most cases hotspot and tethering are way better ways. But bluetooth is much better to share data between devices than even NFC as you don't need to be contacted to other device and you can use it multiple times easily. NFC to start bluetooth protocol and pairing is different thing and is nice small improvement but not so huge as some companies want to promote.
