Lumia 1520 does not support Bluetooth Keyboard (HI...

Question

I would very much like to buy a Lumia 1520 as it would spare me from carrying both a phone and a tablet.
However, I am not going to as, for reasons which utterly defeat me, the Bluetooth stack does not support a keyboard. The HID (Human Interface Device) aspect has not been included.
I am utterly baffled by this simple omission. From my Nokia N95 through to my N8 I was able to use a keyboard. I even still have a Nokia one which folds.
Would someone from Nokia be good enough to:-
a. let me know why this bit of simple but basic functionality has been left out?
b. when, if ever, it is likely to be included in an update? 

Answer 1

Agreed on all points -
1. Lack of HID support is a glaring omission that needs to be fixed
2. Microsoft is responsible for omitting HID support (which existed in Windows Mobile 6.5!)
3. There is hope for the future when Nokia/Microsoft collaboration is tighter after the merger.
As mentioned above, a WP device can see a bluetooth keyboard - it can even perform the pairing handshake.  It generates a random code, you enter the code on the BT keyboard, the two become paired.  But then nothing.
I can add a little insight to this conversation: If you were to ask Microsoft folks, the answer would probably go something like this: "We have a finite number of resources.  So to support one feature, we'd have to cut something else.  What feature would you be willing to lose in exchange for HID support?"
I am basing this on similar conversations I've seen on MSFT discussion boards about support for entire-device backups - not piece-meal app-supported "in the cloud" data storage, but total backup/restore functionality.
I personally think it is embarassing that Windows Phone does not support the HID profile.  I know we're getting close.  The code is already on Windows RT for tablets.  So I sure hope it's in the pipeline for WP.  Time will tell I suppose.