i saw a post when the issue was still new, that we can actually add new stuff to the lists as they're getting saved in another database, and even if they can retrieve the one that crashed, it wont affect the newly added stuff. idk about making the list from scratch, some people said that's alright too
Until the actual MGO developers put out one of their special yellow banners on the home page like they did in the past, I see no reason why we should wait to rebuild what was lost. If they want us to not touch our lists a simple banner telling us not to touch them would do much more than another random reader of this site telling the masses not to touch their lists.

GUYS LEAVE IT ALONE, DONT USE THE 'WANT TO READ' 'READING' AND 'ALREADY READ'
APPARENTLY IT'S CAUSING MORE PROBLEMS FOR THR DEVS TO ACTUALLY FIX THINGS WHEN YOUR DATA LISTS ARE CONSTANTLY CHANGING, SO LEAVE IT ALONE, USE BOOK MARKS INSTEAD TO MARK CHAPTERS OR LIST IT DOWN!
ONCE AGAIN, DO NOT MAKE ANY CHANGES ON YOUR LIST, IT'LL TAKE UP TOO MUCH TIME BEFORE IT'LL BE FIXED (ETC MONTHS)