I just feel there is a big pit between the current last quest (500 points) and starting to do upgrades/beating gods. And sometimes it feels like the game kinda loses its purpose after one finishes the quest.
It would be nice to see more quests, they don`t have to be anything special or give a huge reward, its just to be something to aim for, before you can start beating fake gods.
For example: beating AI 3/4/5 or random player, reaching 1k,2k,5k points, achieving 100,250,500 wins and so on and so forth.
Instead of giving a rare card like current last mission, which would make it too easy to get rares, it could simply give some free spins (which might include rare cards), an extra oracle visit or simply coins, to mention a few possible rewards.
Another idea would be to make some new quests more restricted. For example, it would require you to beat lvl 4 AI with a mono life deck, to beat lvl 3 with no cards on the deck costing more then 3 or even beating lvl 3 with no creatures on the deck.
This would require you to invest money, time and some thought into it, therefore it would be a nice change of pace of the just grinding, grinding, grinding to get rares and money for upgrades.