Support request: configure ORGFILE_client.html multiplex output filename

[pataquets]

When exporting multiplex-enabled presentations, I get both example.html and example_client.html files.
I'd like to be able to configure the whole example_client.html filename to a different one, such as index.html.
This is helpful in some hostings to allow concealing the multiplex master file, as it can be named presentation.html and the client index.html. This prevents casual viewers to guess the master filename, as opposed to a client file named presentation_client.html.
Is there any #+REVEAL_MULTIPLEX_... option available or similar to achieve this?