Asking if Bitcoin was enough is like asking if Pork for dinner every night is going to work.
Why does a coin need to bring anything new?
As long as the coins further Bitcoin and the adoption of decentralized currency don't they have a good place here?
Maybe you need not to put money into any of them at all, I am going to hide some ACT with your name on them, they are yours if you can find them before anyone else, I will give you a head start too, just to pick up your spirit a little