Dear Ubisoft,
I've started playing SPPD since the beginning. But made a little break for, well... propably 1.5 year. Backing on track is really hard now, cuz many nerfs, buffs and new cards. So, my point is to add opportunity to reset upgrade of a card and give back to player all materials.
Argument for that is to add more fun to the game. Now to have a good deck you have to push everything you got into your deck cards. There is no way to try new strategy or deck, becouse you simply have no materials and money for that. Even to have fun in one player mode.
There are many games which use this solution. One of them is AFK Arena. I saw many different strategies and builds of team, becouse player simply were not afraid of losing their materials to upgrade. If something goes wrong with your build, or you just want to try a new strategy, you could simply reset a hero for some game money and try a new one.
To sum up. I thing that opportunity to reset cards will add more variety to the gameplay and all of experience.
Sorry for mistakes, eng in not my native lang.
Good idea, but I've seen this request in the past with no attention given to it. The only way i could see them doing something like this is somehow make it even slightly profitable... U get ur materials, but forfeit the coins spent on upgrades, or u get everything back but it costs u 100 CC... Something like that...