I've had a handful of Diamonds after opening packs for three teams and earning PP along the way. My best team is one I actually spent no money on as they were my 2nd team and by then I knew how much to spend on players so I didn't waste my PP on them. I also was in a league with a team that we scored more than 50 runs on in a game which ended up in my team earning 20k+ PP from one game. This season we did well but got swept in the first round of the playoffs.
I had earned a little more than 5k that I had available at the end of the season but didn't really want to buy anything on the AH as I already had a team that I felt was decent. I decided to play the lottery instead and bought five packs. Here's the first pack I opened:
With deGrom at the head of the rotation, I may actually be good enough to win some playoff games.