Impossible to predict mainsteam adoption / peak of S Curve. Too many factors will affect adoption. Forks seem to make slight changes. There will be a shake up in alt coins when pressure to deliver a service starts with more adoption.

Ethereum was 10% of BTC for some time, but not anymore. Personally put my trade crypto into ETH yesterday, looks good value for exploiting one of the spikes that might be likely.

An article on Cointelegraph a few weeks ago is a concern as up to 65% of trades may be a coin mixer.

SMART contracts will be massive, mainstream adoption will change everything. I am looking forward to a Lease SMART contract with my Freeholder, so that I no longer get 10% year-on- year rises in Service Charges!