Hi Pete,
Regarding “full-size miniature image of the logo” can you please share more details? I did not understand this requirement. Any example would be helpful.
You can also select “Content” -> “Thumbnail position” = “Cover” and see if it helps.
Regarding “could there be a gap between the title and the contents, or not show the title with the contents”, yes we can hide the feed item’s title via CSS or add padding between title and content.
Let me know which way you would like, I’ll suggest CSS code which you can paste in your theme’s additional settings.
Thanks,
Aakash