In LSO layouts are a bit different in that their purpose is only for rendering, they don't handle any interactions, auto splitting, manual game time or other platform specific stuff. They truly only visualize information. Similar settings like "Always on Top" for example are in the general settings for the specific frontend, if it can even support that. We likely want to have a way to override the general settings for specific games / splits anyway, so you can have different hotkeys for different games and stuff. So I don't think the layout is the place anymore in LSO for this setting.

One of the conveniences of doing it this way is importing existing .lsl LiveSplit layouts to convert them to .ls1l LiveSplit One layouts. Outside of conversion, the specific frontend settings do seem like a better place I guess.

I think when parsing from a .lsl we can return not only a Layout but also some sort of AdditionalLslSettings that you could optionally apply.