Doing anything to "In My Life" is absurd. As M. Ted says, it is its simplicity that makes it so profound. I find it hard to believe that someone who was, what, in his mid twenties, could write such a song. It is one of only two or three of their songs that I would put on a level with Schubert.

There are some interesting more obscure Beatle songs that work well acoustically -- "Ask Me Why" works nicely because it has a diminished in it that suddenly appears, and delights the ear. I have heard, but not tried, a straightforward version of "She Said She Said" -- this is a really terrifying song done harshly. "I'll Follow the Sun" is a dream to do acoustically.
"You're Going To Lose That Girl" is fun. Something sappy like "Yes It Is" can be done with deep fake seriousness, and it gets across. I could go on.

I agree that the Complete Beatles book is a scam and should be burned in public places. The score collection is a brilliant piece of work -- you get the guitar fingerings and everything.

yours,

Peter T.