Any coin that is a fork is just a lazy attempt on the part of the developer to try to piggy back off of the success of the coin that was created by someone else. This is why forks have low success rates. Make your own coin and make it to be good, stop forking bitcoin and messing with the value of bitcoin.
I agree in part with you, is very hard to start a project using someone else codes, but that's why Bitcoin Private will be awesome in the future. With not much time of project developers have conqueer much resources.
And about the unclaimed coins from BTC holders, they're going to be used as reward for mining. BTCP is a medium/long term project.