So, err... What's left?
Logo image URL: ----> default material. If theme doesn't want to use it, they can add a theme option to ask for another logo that fits their needs.
Site slogan: --> default material.
Select default smiley set for this theme: --> default??
Forum width: --> completely default stuff... (heck, I'd be tempted to remove this entirely, and leave it up to custom.css...)
Enable random news line in the forum header: --> default stuff (i.e. if theme doesn't support it, it doesn't have to do anything with it...)
Show statistics on board index: --> ... see below
Show latest member on board index:
Show group key on board index:
Show last modification date on modified posts:
Show view profile button under post:
Show user avatars in message view:
Show personal text in message view:
Show gender images in message view:
Hide post group titles for grouped members:
Okay, seriously... I see absolutely no 'logical' theme option in this. It's all stuff that could be made into either a Member Option or a regular option.
I can understand that one would want to keep at least one option in the Current Theme settings, if only to show themers how to add an option for their theme. Then again... Then again, they can always refer to SMF documentation for that.
(Plus, theme options aren't searchable. Which is why I didn't find the Post group option.)