I've said it several times - BioWare has provided me with many many hours of high quality entertainment, and have earned this do-over. I'll get whatever they produce to improve the ending, and try it out with an open mind.
If it is more of the same crap that is in the current abomination of an ending, I will be done at that point. Won't come and complain here, won't try to change anyone's mind... I'll just be done. If I ever buy another BioWare game at that point it will be the "ultimate" edition for 30 bucks with all DLC and such a year or so after it is released, and then only if it does very well according to fan reviews.
BioWare changed the way I thought about computer games, especially with KotOR. I went from just playing games to really becoming immersed in the escapist fantasy of their universe. I didn't appreciate the risk involved with doing that until the frustration and disappointment with the ending of the Mass Effect trilogy hit me in the face like a wet mop. If BioWare proves unable to get this right it won't just effect my purchasing of BioWare games, it will very likely cause my basic attitude about computer games to change again. I really don't ever want to see something I put this much time and invested this much emotion into turned into complete crap ever again.