The following concept could be an alternative design for the current deck viewer on Android. It lacks some more specific data but makes it a little easier to work with. Especially on smaller screens this would be quite nice to have!
Swiping to flip would probably mean that it will perform terribly on large decks. Not to mention that Anki cards can have audio, images, videos and crazy HTML, CSS, and JavaScript. So rendering them like that isn’t easy.
Flagged cards get the whole row colored in the current design. Same for “marked” cards.
The border idea could be interesting, but I’m sure not everyone will like having colored borders in addition to flag colors.
Btw, the card browser search bar is being improved: feat(card-browser): Redesign using Material 3 SearchView [Dev only] by david-allison · Pull Request #20454 · ankidroid/Anki-Android · GitHub.
I get that the sliding feature and rendering of html might be a bit ambitious but i think i would still prefer a card based layout with indicator icons. That would allow for more complex information to be displayed compared to the full colored row where flags and other features might interfere.
Sadly ive quit android development a while back so i cant really build a quick concept but it would still be awsome to see some kind of layout like this.
The new search function looks great btw!