I truly love how the daily puzzle format is intentionally nonaddictive. So many games and apps are designed specifically to get you addicted. This was my favorite thing about Wordle when I first heard about it, and it's one of the main reasons I embraced this model for inspiration.
That said, there has been consistent feedback that people want to play old puzzles, myself included. At least for me, the replay value is actually pretty solid after a few days' opportunity of forgetting the solution. So the next big feature I'm working on is the puzzle archive. Stay tuned!