My top two:
1. Playable without the log.
2. Fix all the bugs in how the cards work (which includes tokens not appearing and even Journey token being the wrong way). EDIT: Also that there is no way to know where set-aside cards can be seen. You have to already know to hover over your user name, which usually means reading it in the forum. I consider this a bug.
These two are way, way above any new features, such as adding Stash or inheritence, logs or leaderboards. Fix bugs before you add new stuff.
1. Playable without the log.
2. Fix all the bugs in how the cards work (which includes tokens not appearing and even Journey token being the wrong way). EDIT: Also that there is no way to know where set-aside cards can be seen. You have to already know to hover over your user name, which usually means reading it in the forum. I consider this a bug.
These two are way, way above any new features, such as adding Stash or inheritence, logs or leaderboards. Fix bugs before you add new stuff.