The problem with doing clones of nearly 50-year-old drum machines vs 50-year-old synths is that the synths where/are complete engines: Pro1 & Minimoog are still to this day respectable and flexible voices so direct clones are a viable sitegeist ..
The org 909 and 808 are very limited and direct cloning is just not on par with 2018, Roland gets away with it do to more flexible sound, modern UI, twist and fx (I still think the TR8 sounds nothing like the original despite some saying itยดs 95% there) ..
so the only thing these direct clones have is the original sonic value, but 1:1 is just a daft decision in 2018.. I mean will the 909 clone not have HiHat tune

(creative/logic vs purist).. Uri I sent you a message (not public) with all the magic mojo ingredients needed for making modern analogue drum machine: underlining analogue mojo ..
Now craftsmen are stepping up the game: the Erica Synths Techno Drum System sounds amazing and is very fresh and flexible .. really a great sounding NEW drum system..
Look more forward to the Behringer RD999 rather than the 809 clones tbh ..