MODE=0022 sounds like user perms are different from group and other.
0022 in octal perms corresponds to u=rwx, g=rx, o=rx.
I don't know if udev "MODE" is the relevant thing here but you could try 0002 so the user part and group part are the same.
Do you mean you want to put the resulting image files into a particular folder on your computer?
I would have thought anything to do with folders and stuff is up to your scanning software, not the scanning device.
RHCP = Rocky Horror Chilli Peppers?
(your points are all good, I just found the abbreviations amusing)
I like it!
Quesadilla looks like there's room to mangle it further:
KWEZZ-ah-dill-ah
or even
kwe-SADD-l'a
like there was saddle in there