It wouldn’t dilute the gem value. You keep everything the same as it is now, 8400 gems for 30 pulls 3k for 10 pulls.
Players just get the option to sell back heroes for gems.
It’s fun to try and get the best heroes, it’s not fun to experience the inevitable power creep that makes the heroes you worked a year for, or dropped 300$ on, obsolete.
There needs to be a legitimate solution. The current system is broken. There are lots of routes they could take, but a buyback system like I’m suggesting would provide instant appreciation to everyone who has already spent.
Additionally, old players who quit the game due to power creep could return. They could sell off their heroes and get new shiny ones!
I came back for no other reason than soul exchange, so did many others.
Players want to feel like their time and money is worth something.
This game totally lacks, consistent trading, a pity system, reasonable pacing on ascension/limit break options, and limited hero inventory. All of those issues lead to a series of problems.
Many players are stuck in a loop where they grind out ascension mats for 6-9 months, summon and cross their fingers. If they don’t lucky they have to fork over more cash just to have a viable target for their ascension mats.
Something has to be done. If they create a legitimate buy back system dupes feel bad, but not repulsive. Power creep feels like a reasonable part of the game, not the grim reaper demanding payment to stay relevant.
Anchor said it best during springvale, “you pretty much had to buy master lepus to stay relevant.” If you allow players to sell their old teams to help reduce cost to summon for the heroes you have to get to “stay relevant.” Power creep keeps things interesting instead of killing the game slowly.