WHY BUY AS-1 IF STILL NO MIDI FOR SP-16?

I'm sure everyones been tired posting abd reading by now, but has anyone thought to raise to the question to why the new proposed MIDI option of 1.2 still isn't fully operational?

I have roland synthesizer (JD-XI) pulled in, followed the official Pioneer instructions and still can't get a sound signal. Although I do see all of the functions in place as presented, it just doesn't full perform. I wonder if there's a missing piece to this puzzle some on the Pioneer team could educate us of. After all, The AS-1 is going for $500 U.S.

I wouldn't want to get something I can't connect to this beast.