When we talk about growth, I am afraid of dying of most altcoins. I think the next stop of BTC is getting rid of all the coins that has no utility at all and not used in something. Even if its just an altcoin on some small casino if it is used its great but if its not tied to anywhere they will go.
For example, we all know ethereum is used for ICO right? And dapps? That means it is used, for example BNB is used in the exchange right ? EOS for casinos and dapp, NEO for another ICO system and there are plenty of other stuff as well. If it is used like that for something it will stay and gain momentum however if it is not used anywhere and only a coin that people trade and thats it, has no utility than it will definitely start to die slowly, people have coins that has some use for it, why keep buying coins that have no use at all?
Most of the coins we have now really has no utility function, they are just good for trading and investment which is why they die easily because there will always be coins that will arise and better in trading and investment than them.
This is the problem we are having now with some of the old coins we have that are not responding to bitcoin movement, because they have no utility value, investors have already use them for trade and dumped them to their faith, and except they later try to add a utility function before they will rise again. We think only developers use and dump investors, investors too are worst at doing this, most especially the whales.