I have broke 7000 Crystals as of today. I remember when I bought Magneto I thought I was never going to have a surplus again, but they just kinda added up over time. I rarely buy anything. I do give Netmarble money for the Stark chest thing every month, which helps, and every few months do the €10 Bio thing, but a lot of my Crystals are just coming from getting so many characters to Level 50 and 60
Tomorrow will be the day I finally complete Doc Strange Epic Quest after what feels like ages. I can now start putting my BAM into QuickSilver - I think he is the most worthwhile.
Also I have three Tier 2 tokens sitting doing nothing. I hate using them on something I can farm. Almost all the Xmen are at 20/20/20/20, so I could unlock Jean soon - but I think I will naturally farm the X Men to unlock Jean. Cyclops is 20/20/20/19, which means Jean in at least 15 days away.
This game continues to be a nice timesink for me. Not annoyed yet since coming back a few months ago