If they make the jury they will be around to earn points each week. Once someone is evicted they can no longer earn points. It is not all about winning competitions I agree but the strategic players can earn points in other ways by staying off the block and voting in the majority, etc. This point system may not be perfect since I havent tried it with Big Brother yet, but it should work pretty well from my experience with the survivor group.
Final 2 is a big accomplishment, but as an example if Victoria made f2 in BBUS over Cody, I dont think that should mean she should get more overall points throughout the season than Cody, because he simply played a better game. This point system should reflect that. If I find that during the first week or two that the point system inaccurately reflects the houseguests I will modify it. Thanks and please continue to suggest/ask questions!