Once the rewrite is complete we will begin building out the interchain which will allow communication between blockchains (without the need of sidechains). This will build out the basis for the network that will allow end to end encrypted communication and transfer of data. Think of it like TOR, if TOR was not created by the US military with likely multiple backdoors. There is a lot to do still before we get to that point, but the amount of flexibility that the coins wallet will support will likely be shocking. This is what you get when you write the code with a goal in mind rather than patching it with little knowledge of how to write the code in the first place.