A couple thoughts:
1. I imagine the final version will look a lot like the deck search feature already available, so I would say the next updates to the beta version should prioritize adding a keyword/tag function to help filter the results if people have a particular style in mind. Additionally, adding the 'deck contains' would be nice if people wanted to build decks for their pet cards.
2. This could be a machine error on my part, but when I click on a deck to view it and back arrow to the tutor page, it doesn't show my search results anymore and I need to put in my preferences again. I think having the results not be
reset would be nice and help with the navigability of the page.
3. I have seen several others post something along these lines, but if possible I think the deck score parameters should be updated to better align with how well the deck matches the collection. For example, I have noticed that even when viewing decks with a 5 score, there will still be cards I have too few of or am missing entirely. Not as many as a deck with a 4, but still more than I would want. Ideally, a score of 5 should represent that I am missing no cards and have the exact amounts. A score of 4 should be I am missing no cards but there are cards I don't have enough of. 3 would be a
balance of missing and not enough; 2 would be too few cards for the majority of the deck and even more missing than a score of 3; 1 would be they only have a few cards total for the deck.
All in all, I am very hopeful for this function. I can definitely see it being combined with the deck search function where it's one of the boxes people check along with 'show incomplete decks' and 'only show my own decks'. Maybe it could say 'show collection score' or something. Either way, thank you for the great work!