Question for you all....let's say I want to go back to KitKat or factory reset. Will the Bluetooth ability be restored? [...] If not, would the KitKat version downloaded from Sammobile restore the Bluetooth capability?
Beut is pretty much correct. Once you've downloaded and installed OS 5.0.2, a simple factory restore from the tablet's built-in menu (or from the boot-time menu) will simply wipe your app data and restore the tablet to an out-of-the-box-like condition,
except that in this case, it will still be at 5.0.2, and bluetooth will still not work.
The only ways back to 4.4.2 will be to:
(1) download the NK1 version of the OS from sammobile and install it, or
(2) you can do the return-to-Samsung method described earlier in this thread to get 4.4.2 back.
Whatever way you get to 4.4.2, you'll have bluetooth working again.
Once Samsung gets its act together, the next OS will
hopefully be 5.x.x
and bluetooth will work.
We'll see.