I see altcoins eventually shaking loose from BTC as utility coins become more common.  IoT applications in particular I think will create and hold value.  Value is what it takes for successful coins.  Machine to machine transactions are required at high speeds and low cost because of the shear volume of transactions.  One that I have been getting as many of as possible is Marinecoin, MTC.  They are using time dilution technology so everyone gets a fair shot at many MTC if they are willing to do some work and help promote their current ico.  Zero fees and speeds 500 X BTC make MTC perfect for iot applications.  Find out more here  marineco/in