Completeness of XML-RPC remote API implementation

I'm curious whether there are any plans to complete the current implementation of Confluence XML-RPC API in a near future or it will be replaced by some different remote API. We are using it for various purposes e.g. for Wiked - the off-line editor, uploading batch scripts etc. and we miss implementation of some features that are part of the API specification. For instance, our build script needs to set Page.modifier property when uploading a page. Thank you, Jiri.