Now this may not be possibly done by the careless user, but it could be found by miners.
Lost bitcoins should have a way to be mined back into the market and Recovered..
Is there a project about this already?? What is your opinion and do you think it's is possible
It seems you don't know what exactly miners do?
Miners don't have tools or features just to simply mine those BTC back and recover.
What they do is verify transactions and mine blocks that contain rewards, meaning what they mine are new Bitcoins plus transaction fees, not from other users' wallets.
So, there's no way to recover lost BTC if you accidentally sent it to the wrong address.