No one can predict whats happens next. Likewise dont know what will going to happen in the coinmarketcap. But i assume some coins in the coinmarketcap that will have good future. Coins such as
Ethereum
Ripple
Litecoin
Neo
Cardano
TRON
IOTA
Bitcoincash.
These are coins have good support and shows their healthy growth in recent days. So invest in these coins will be more useful in future.
it looks like a very good coin to hold in the future. but you do not forget the bitcoin. I think this is the most potential and promising coin if for the long term. because bitcoin is only limited. the more step the coin will be the more expensive the price.