Just one proposal: Somebody was talking about the possibility to make a lightweight wallet, given the fact that the daemon and the wallet are running separately.
I would start considering this idea: It would be possible to provide something like an "official" daemon, with all the necessary measures to provide a reliable service (clusterized, HA, ...) as well as a smartphone wallet. If anybody could have on the smartphone a monero wallet, that would ease a lot a wide adoption, and even making XMR a viable payment method.
I would suggest the developers to think about that possibility.
zone117x is working on it already.