But to answer the original question:
Engage and try to help new players, whether answering and engaging on here or loaning someone a jet or weequay deployment at a local tourney. Keep encouraging people to go try a tourney. All it took was one and I got hooked.
There are many threads in here where a new player lays out their content and asks for help building a list for a tourney. When that happens, maybe we don’t lead with telling that person to go buy another copy of Jabba’s Realm only to get a second eJet/eWeequay card. Those might be strong but that’s not the question they asked. You don’t have to have multiple copies of all expansions to have a blast.