I agree with what was said here, it's also the fact that say if you have MJ, although, you want some more coins and money say for factions (once it comes out) then you can buy a previous rank and you'll get everything that rank has but you'll stay at MJ. Some people also do that just to support...
I get what you mean there, for me since new people are constantly talking to me I usually update my friends list to allow some of my new friends on. Although, I never remove some of my better friends, like you, Breezi, Mad, Issa, and some others.