4* crystals from crystal shards
I would like to suggest making another 4* crystal in the crystal shards area that has champs from the 2017/2018 releases and at the end of this year, phase out 2017 and add 2019. Make it cost 3000 shards instead of 2000. This would give players an option to choose and a better chance at getting a champ they want or need to dupe rather than Hawkeye or Hulk (nothing against them, just they are older and for players who have played for 3 or more years most likely have them at max sig). I don’t use 4* much anymore, but I still like collecting all the champs. It’s one of the reasons I still play.