Lemme say this:
IMO this time around U2 will make another "really good" album.. like ATYCLB and HTDAAB were...
But U2 will NEVER make an album as groundbreaking, multi-dimensional, passionate, spiritual as JT and AB again...
Why not? Because they are different people now. And Bono a partime-musician who can't remember the titles and lyrics of his own songs when on tour!
20 years ago they really wanted to prove themselves that one day they could reach that top of the mountain when it comes to creating something really special and "out of this world" and more important: "out of their own world"..
Every minute in the writing- and recording process was spend on achieving this "high" point. Adam, Larry, Edge AND Bono spend every drop of sweat in it to get there.. Full time! And especially Bono was really a 100%-er when it came to the music.
We all now that nowadays he's 50/60% politician and patriot for the good cause and just 40/50% musician!
Yes, I know that he's has always been active in fighting for the good cause (even around JT and AB) But when it came down to the writing-process of the songs: he was there! From the very first note to the last mixing! And Bono's brings a very important and huge contribution to the writing-process, not only with his singing...
We all know the stories that when the writing- and the recording-process was happening for ATYCLB and (especially) HTDAAB Bono's just wasn't there a lot of times! Also to the frustration of the band!
Now with this album again we hear Lanois say on multiple ocassions: "the songs are ready and we're now doing the singing-parts"
So AGAIN it seems that Bono hardly wasn't around creating the music for this album with the other guys and has to match his singing-lines on top of the music AFTERWARDS! From Boy to (at least) Zooropa this was all happing simultanously: creating the music AND the singing blended in!
So nowadays having arrived at this the-biggest-the-best-peak years ago, and being are middle-aged men now who have "been-there, done that", together with Bono as a part-time musician: this album will probably "sound" a little different compared to the previous 2 and will again be a "good" album but will never achieve a new groundbreaking "Highness"-level of JT and AB (or even UF)!
Another point to worry about: the more Lanois/Eno/Bono starts to point out: "this is the best song/album yet" the more we need to worry. Usually the weaker a song is the more they start backing it up with a lot of blah-blah, because the song probably needs it and is not as strong on it's own. Usually when Bono/U2-camp knows this they start pumping it up with a lot of swagger...
(Still, I hope I'm wrong this time around..)