True about "Two of Us," and such, but even those acoustic numbers are "guitar-driven," as opposed to the two Paul songs that are "piano-driven." The two piano-driven songs could have been reworked and used on their Abbey Road album, much like the song "Maxwell's Silver Hammer" was.
So far as I understand it, the songs from the Get Back sessions were shelved, and essentially forgotten about by the Beatles. But I'm sure Paul cared a bit for his two piano songs, and probably would have been better suited for Abbey Road.
Glyn Johns tried to make an album of what was recorded for Get Back - tried it three times, yet failed - until Phil Spector came along and did something good with the material. And while I think what turned out to be Let It Be is good, I still think Paul's two piano songs are misplaced on it.
And you can't compare older Beatles albums like Help! or Rubber Soul because those albums had the "Beatle Sound," so you could incorporate ballads with the faster tunes. Let It Be was an almost complete departure from the Beatle-sound, and as such it should have held on to its concept of being a guitar-driven album. Why the Beatles abandoned it is beyond me? How could they abandon that, yet go on to record another album like Abbey Road in relative harmony? The whole idea about Get Back was that they were super-p*ssed at one another. How could they "not" be super-p*ssed at one another while recording a "new" album? Weird.