Just read this guide: https://www.lesswrong.com/posts/7Q7DPSk4iGFJd8DRk/an-opinionated-guide-to-using-anki-correctly
20 cards a day — Having too many cards and staggering review buildups is the main reason why no one ever sticks with Anki. Setting your review count to 20 daily (in deck settings) is the single most important thing you can do to stick with Anki long-term.
Is it possible to do this in Mochi? I've also struggled with reaching staggering number of reviews which kills motivation, and having some sort of limit (which also needs to include new cards somehow) seems useful.
Another option would be to add "Easy" button and double the interval for these.