I have ideal of the combination of these:

1. Bitcoin - as a reserve of the world currency
2. Monero - as the most anonymous coin
3. Decred - the most advanced governance in crypto space
4. Dash - the best PR and marketing.
5. Magi (XMG) - the most friendly community.
6. Ethereum - the world supercomputer, smart contracts and dapps.
7. Waves - fiat gateways.