First question (easiest): "How would it look?" Well, I think personally it should be a series. A friend of mine named batsonjacksont (you all know him) created a Michael Jackson biopic concept. Basically, the seasons covered a decade, and everything that happened in the decade was covered. Here's the problem with that format: The Beatles were actually together for (including Hamburg years and pre-Beatlemania) 10 years, one single decade. So how would we split the seasons? I had an idea: a lot of stuff happened in one year for The Beatles meaning there was more stuff that would be covered in a few years/one season. Probably about the same amount of stuff which was fit into batsonjacksont's MJ biopic's seasons.
Second Question: Who would play the Beatles and others? This is where I'm stuck. I have a few people in mind but I think I might need some help with others.
Andrew Garfield as John Lennon - Daniel Radcliffe as Ringo Starr - James McAvoy as Paul McCartney - Benedict Cumberbatch as George Harrison.
Freddie Highmore as Ed Sullivan - Lucy Liu as Yoko Ono - Kel Mitchell as Billy Preston - George Martin - Jamie Bell - Neil Aspinall - Michael Fassbender - Claire Foy as Patti Boyd - Charlie Day as Brian Epstein - Nicholas Hoult as Pete Best - Freddie Stroma as Derek Taylor. I'll let you decide on who should be playing Linda Eastman & Maureen Starkey.