Thank you for the suggestion again!

When you first told me about the grid, I was thinking of Desktop site and putting it on the center of the homepage. We show topic list as the homepage of the mobile website, and as the left navigation bar on desktop site.

On mobile, yes grid surely have more impact to the user for navigating. As not all topics will have images, we can show a placeholder image for the missing ones. However, that would favor topics having images.

On mobile, List of circled images can be applied but will be a bit small to be seen, maybe we can increase the line height. This will not favor only topics with images as much as grid one. SteemHunt example would be so big to waste space but can be thinkable as an alternative.

Besides all, for the first version, we tried to value all topic same, regardless of they have appealing images or not and caring for only knowledge. But for new users and next versions, this will be more appealing for sure. Maybe we can start with the list with images first.