I believe "top player" should earn a decent amount of clan points for a clan, as it will encourage competition. Or maybe top 5 players in order get a certain amount each week and or month

100% agree. Although not clan related, having the best players deserves points in my opinion.

Only issue I could see with this is point farming from within your own clan but that is an issue regardless of whether or not this is added

Doesn't beating people outside your clan give you clan points anyway?