Pros:
-Paul holds the group together, writes a majority of the material, and was very faithful to Linda.
-John started the group in the first place, also wrote many of the hits, and had very creative ideas.
-George blended other world cultures into certain songs, played recognizable lead guitar, and wrote memorable hits.
-Ringo was neutral in any sort of fight The Beatles had, was very experimental with drumming, and was reasonable if any problems occured.
Cons:
- Paul was too controlling over the group, a bit pretentious, and caused a bit of strain that lasted more than it should have.
-John could be too cynical, disobeyed certain rules the group agreed to earlier, and was unfaithful towards Cynthia.
-George was withdrawn, his admiration for Indian culture stood in the way of other things in his life, and held grudges.
-Ringo had a heavy alcohol problem at one point, and he didn't do as much songwriting as the others.