Hi Nick! Apologies for the radio silence on this topic from the team. We’ve been away at our annual world meetup and are still getting caught up after our return.
We’ll get an answer to your question as soon as we can.
I wasn’t involved in creating this theme but do know it’s intended to be simpler, so it’s possible the category images are not intended to be shown on the home page. I can see how it would be nice, though!