What a teaser! Seriously though, yes, so many of us love your work and the photo skills just polish it off. I will definitely be one of the first in the USA to buy your B-project manual. :)
For the next MOC.... here are our clues:
"I love black ;-)"
"It is something that no one has yet done on a UCS scale :-)" - so it's been done before
"Small clue .. my next project (SB00401) will have 3470 pieces ..." - so something smaller than the Resistance Bomber as the # of pieces is less but is still UCS scale
"Model #: SB00401"
From his website splash page for this project: "..it works..", Anakin??
He's made only ships so far... i.e. no land vehicles, does the trend continue?
But not:
V-4X-D
Sebulba's podracer
UCS Gonk :(
My insights are.... a version of a TIE fighter but I'm doubtful since we already have Kylo's (we've already got UCS Advanced, Interceptor and standard TIE.... although interesting since LEGO's new contest/vote for next UCS includes a TIE Bomber...), possibly a Scimitar but that's more grey, Kylo's or Krennic's shuttle but they seem to already have MOC attempts, and lastly my best guess is... I'm honestly at a loss since each one of these ideas I've seen some UCS MOC version of.... you got us Mirko. :)
If we had one more hint perhaps we'd nail it!