I intend to create blockexplorer soon after release.
If you would like I could give you more info about the API or you could tell me which functions you would need.
The new API will be more REST like using HTTP methods and urls to make it easier to use.
I want to be able to use RPC to receive information on all transactions in a given block.
And I am interested in the possibility of starting a wallet (as a daemon?) on Ubuntu Server, without the graphical interface.