Hmmm. Interesting proposal.

I think it's generally best for a card to stand alone. If there's some rules that need adding for a set of cards or a mechanic, those would be best explained on a details page for the set.

When you say "the various grid views"... I can think of skeleton, visual spoiler, and cardlist. It makes sense to include a description in the cardlist. I don't think it makes sense to include anything like that in the skeleton automatically; perhaps a card could have a very small text field to be automatically included in the skeleton, but individual skeleton rows want to be very slim to keep the whole page manageable. On the visual spoiler I don't think it's sensible to autoinclude text - or at least, I can't see a use case for it at the moment.

Could you elaborate what kind of description you're thinking of, and what set of pages you'd want it to be included on?

I'm thinking mainly about recent changes. On the right it has a description of the card set, and I'd really like to sometimes at least be able to override that with a description of the card in question. It's mainly for my huge stable of "This card idea is halfbaked at best" cards where I want someplace to describe what I'm trying to do.

It's not a hugely important request.

I think the comments log for the card is the best place for that. It's intentional that people can only post a comment on a card from the page where the existing comments are shown, so if they're going to make some misunderstanding then the creator has a chance to correct them first. You can draw attention to a particular comment using **bold text** if you want.

I'm inclined to leave this suggestion open, but not planning to implement it particularly soon.

I was thinking it could use the highlighted comments - but you can highlight more than one (and since they show up at the top of your set you also usually want to highlight very few cards)

Now that I have the Front Page capability, there's not much need for the original use of highlighted comments, actually. I could remove the up-front display of highlighted comments and let them be just used on a card history to let the cardset creator draw attention to a particular comment, and potentially later on let them be displayed somewhere else as well.