Well, I think there is one difference between his idea and those other topics.
The other topics are mostly about trading between players.
His suggestion is simply to sell items to get coins and tokens.
So it is not about trading between people but simply selling the item back to the server = deleting it to gain money or tokens.
That option would be helpful for people to free their inventory of unneeded items in case they miss funds or items to upgrade anymore like being stuck with KITS or maxed out items already.
The only change I would suggest is that tokens would only available for selling myths.
Like many coins + 10-20 tokens for myths.
Otherwise there would never be a chance for TS to consider it if the players would get many tokens.
Though I do know that TS would most likely ignore it anyway I would like an option for players to free inventory in case they cannot fuse anymore.