The current development roadmap looks something like this:

1. web wallet improvement
  - create variant of wallet with client side encryption
  - add more extensive multi-sig transaction tools
2. block explorer improvement
  - add list of pruned blocks
  - add charts and more info
3. "slice sharing" optimization
4. bug squishing (eg wallet corruption, syncing issues)
5. consider move to rpc wallet
6. add chain pruning command
7. block mixing, side chains, etc