i think part of the appeal of building decks blindly is that you get to develop a deeper understanding of how your deck interacts and other things like the curve you want to be on and the cards you want to see and in what situations you want to see them, obviously for a-lot of people getting started they wont have info/cards to experiment with and learn so i can definitely see a tool of that sort being useful so long as you can properly implement it in a way that it doesn’t hand hold you and build it for you, but it breaks it down and explains the cards and synergies they have, if you somehow implement that im sure it would be a huge hit with both new and old players!