You can have a partner, a subscription campaign, and airdrops. And to hire in the support command where managers will be focused on clients. And of course more discussion. But it is worth noting that your project should have a good prospect for the future. Otherwise, the attraction will not work completely. In other words, look at the Kelvin Blockchain project, and how they are aimed at future technologies.
Kelvin Blockchain project itself is flexible to implementing cryptographic algorithms which will make it one of the safest blockchains ever existed with 10+ signature available from the start. This project does not rely on any particular signature algorithm and due to the multi-client use - on some single consensus. In case of any problems, it is possible to quickly locate the threat and prevent it’s distribution throughout the system. Multiple blockchains with different consensus algorithms, token types, and assignments will be available. The multichain technology allows creating almost an unlimited potential for speed and productivity. Kelvin Blockchain can launch up to 2^64 subchains - more available subchains will benefit in increased speed and security. Moreover, all the blockchains will be processed in one wallet so that the client could have fast transactions, secure investments and cheap smart contracts as well as a lot of other services at his hand.