@Acill
Why do you think the A4000-CR is worse than the normal Revision B A4000?
The CR model adds:
-Lithium coin-type battery (no leakage)
-header for external battery
-on some models, on-board 030 and socket for FPU
(C= shipped an A4000/LC040 that had A3640 and no 030 onboard - I know I have one

-on board chip ram (you can argue this either way, good or bad)
-Revision 11 buster standard
So I would say the A4000-CR is actually a better board than a normal A4000 Rev. B.