Yes, I agree. This is part of the reason I did this, is because I did not have a good sense on what cards would be best for my own play, and I think the data would help newbies and oldtimers, so to speak. So, I did get more than 250 chests and I made about $4 in battle and chest rewards for the entire season. This was close to my the rental investment, but I purchased many extra energies, so that put me at a loss. Now, the leaderboard placement helped. My advice is that if you can get on the leaderboard you can make a few $, but if not you stand to lose a few $. That is not ideal, but that is what I found out.