Probably still plenty of time. The thing about these card games is that they can always go back to popular characters and do new cards with them. Case in point, getting a new Blue Vader in LOF even though we already have green and red vaders. Perhaps they will do a yellow one down the line? Certainly there will be one if not more Lukes coming down the pipeline etc. Point is, they can keep making new cards based on previously released characters that add to the game with new card effects and keywords etc. with this in mind and with how expansive the lore is, with the right creativity they can keep it going for some time. They can always ass pull different/new types of troopers, rebels, smugglers, vehicles, events, equipment, etc too to flesh out each release.