New 2.0.1 trials
Let's start with the good news: the 10.11 build works perfectly, autoimport, export, no error message, wonderful!
Now, the bad boy 10.9.
I confirm the no autoimport and the "unreadable disk" error message on each pool manual import, but the import goes well.
EDIT: I've deleted the part regarding the export issue, as I've found out it was already there in 1.9.4! It looks like doing a zfs inherit for mountpoint and checksum on those pools have fixed it... (They had those values set to local instead of default)