I see an official update was supposed to be released Q2 2011 and that is just about over. Worth waiting it out? Is it an official GB release or just fixed Froyo?
no one really knows whats going on. there was a rumor going around that there will be an update on the 30th that will bring the reboot/4G issues and also Gingerbread. but if that really happens it will be amazing. as for waiting it out, i wouldn't. you would probably have to revert to the shipping OS anyway to root so may as well do it now. that is how this phone is rooted. revert to stock, root, flash newer rooted system. once the official OTA hits, it will be about a day until a debloated/zipaligned/deodexed ROM will be released. so i would just Root now while you know it is still possible.
i haven't tried many ROMs as i just got my TB about a week ago. but i am running liquid gingersense v 1.2 and really haven't run into any problems.
but if the wife likes CM7, you may want to give CM7 for TB a try. using the MR1 radio, i guess it is actually pretty solid. i haven't givin it a go yet, but i plan to when i get some time just to see what all the fuss is about.
you can also check out OMFGB as i think that is an AOSP based rom.
to get back to 100% stock i think it is just a matter of flashing the the stock RUU which can be found here;
http://forum.xda-developers.com/showthread.php?t=975888
someone mentions using it to return to stock to get a replacement from verizon.
download, rename to PG05IMG.zip, place on root of SD card. boot into Hboot, and install.