Every song on NLOTH, imo, is better than any of the previews, and I LOVED the previews. Breathe was the only song I had a problem with because I couldn't figure out how it would be in the end, the beach clip was just not that great, but today I absolutely love Breathe and think it's one of the best songs U2 have ever done. I trust them on their decisions and I think they made a great album. Fans here tend to always overrate the demo or previous or alternative versions and not appreciating the final product enough. Sometimes I wish we'd only hear the final songs and not the early versions. Btw, I still feel they haven't altered much from the beach clips. From the u2.com video clips, it was clear they wouldn't keep everything, they discarded whole songs, like Winter or Every Breaking Wave, and I still say it's good they did, because Winter isn't a great song and EBW will eventually be relased on Songs Of Ascent.
U2 cannot listen to what every single person says, they have to trust their own judgement. Of course there will always be fans who disagree with what they are doing in the end or what version they chose or what song they leave off a record, but in the end it's their own decision that matters, what they want and feel comfortable with, not what the fans say.
No overproduction on NLOTH, if you ask me, I couldn't be happier with the album. It's the U2 album I feel the strongest for at the moment, and I've listened to all the other U2 albums in the last weeks.