1. Training grounds needs a toggle between Standard and Wild modes. I want to play and test Standard decks against equal strength opponents, not lopsided hate matches.
2. Agree with Red dot, it should indicate new notifications only, just like any other application.
3. Block specific events should be added to the rotation, where you can earn boosters for that block. eg. Nodes of Power could run every week, one week is KLD / AER, one week SOI / EMN, etc. Prizes would be specific to that block.
4. Prices are too expensive. Stop milking the supporters, offer more up for sale instead. Lower prices / reduce package sizes in order to add more supporters at a lower price point. Spread the revenue model across a wider player base.
5. Segregate competitive and casual play. "Boss health" timer on a coalition event is for the coalitions to compete for those prizes. Once the boss health is reduced to 0%, the event should remain open until a fixed amount of time has elapsed in order for individuals to finish their own progression. Coalition scoring ends when boss health is reduced to 0%. You can then reduce the amount of boss HP so that it will diminish in a shorter amount of time, thus requiring a shorter "competitive" period.