Just being able to see how its flowing onto a K-1 would be very helpful, so that I can confirm no checkboxes were missed.
They have the 1040 show with it watermarked "Do Not File", so I can't see why there isn't a K-1 like this.
I have a client with several layers of pass-throughs, so doing K-1's manually will be time consuming.
I think your only options are:
1) wait for release
2) re-run your scenario through 2019 software, accepting the changes in tax laws btwn years
3) draft them manually
If you just can't "rough" out the numbers needed for year-end planning without a K-1, generate a "projected" one using the 2019 software.
Are you relying on the K1 data transfer option to do year-end planning?