Just responding to J. Larry
"I’m pretty much satisfied with 2016 BIAB as it is."

everyone has a different use for it, so any wish/improvement is good, some people may never use that feature and others will.
I have watch the forum in the past and lots of suggestion got a real hard time, but, then pg implemented them !

So as said above, unless they hire more programmers there is not enough hours in the day - this is all up to pg how they run their business and what they decide to do.
But hey never stop dreaming that's the birth of great ideas that become reality.

"SO Pipeline, do you think there should be a more powerful version of BIAB?"
There is a pro version request here http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=327412

""They could keep the existing band in a box how it is 32 for the older users that have been accustomed to it's interface for the last 20 years and make a new modern version that can be used like band in a box in an audio workstation like real band in a new c++ 64 application (along with multi drums).""

If they don't get around to it but then when they fix the vst time info you can then sync band in a box to a daw like reaper with as many drum tracks as you like or use a vst like Temper that will take a lot of drum tracks and they will all play in sync to band in a box.

http://www.angryredplanet.com/temper/