I would like to propose that the developer could consider allowing heroes, 1star to 5 stars to further improve their stats when they have maxed out.
This can be done when they pull 1 or 2 similar hero cards which could be used to combine with the maxed out card to further improve their stats or even stars.
For instance, you have maxed out 5 stars magni, then you pull 2 similar magni heroes again. These 2 magni cards can be combined with the magni that is maxed out and it’s stats improve etc.
This will also apply to 1 star to 4 stars cards and as such, something for f2p players to look forward too, not to mention the p2w players.
For your consideration, please.