GCZ is supported by wit as far as I know. In fact, I think wit supports every disc image format that Dolphin supports, except for TGC.
As for adding a command-line option to Dolphin, I'm not sure if there's enough interest for it. Programs like wit can already be used for things like that.
The format of the wx_gamelist.cache file changes between versions of Dolphin, so I would recommend not relying on it.
As for adding a command-line option to Dolphin, I'm not sure if there's enough interest for it. Programs like wit can already be used for things like that.
The format of the wx_gamelist.cache file changes between versions of Dolphin, so I would recommend not relying on it.
