I think part of the reason there has been so many tokens created is cap on the amount of Bitcoins that will ever be created. Inorder to keep the price of Bitcoin more stable, a substitute needed to be created. Each token can be manupulated by the amount of currency available to an agreeable price, therefore diverting some of the attention and inflation away from the Bitcoin. What is stopping the producers of these new coins from mass producing the coins, rendering them worthless? Part of the challenge for the new Cryptocurrencys will be keeping a consistent amount of tokens circulating, maybe allowing for minimum and maximum amounts of tokens to be released. This will help the customers feel like their investment has stability.