I play this game a lot during the days, Ive even made multiple accounts on multiple devices to play, however, i think there should be an event that gives Dragon Stones daily upon completion, once you beat all the missions and events and collect the Dragon Stones theres no other way to get more other than the login bonus or spend real money, an event to do daily to earn between 3-5 Dragon stones would be great. Also, There should be an option to trade cards between players locally and via online, with set restrictions like a SSR for a SSR or an UR for an UR, equal trades so both parties have something good to look forward to. Last suggestion is an event to earn Elder kai medals and Supreme kai medals, maybe make the event only on weekends and Super difficulty so its challenge to get but still fairly obtainable, i have a lot of SSRs to Awaken but cant due to lack of Elder and Supreme kai medals, overall a good game.