I graduated from the Physics and Mathematics Department of the University. I understand the whole complexity of the task. Most people will say that this is impossible.
But as a mathematician, I say that nothing is possible. The main things are: Luck, Time, Resources. And we are sure that the reward is worth it.
Its really impossible if you can do such thing. Why wont bother on searching for investors if you can totally crack some privatekeys and get some funds to make development on what you are proposing on here?
This would really involve lots of work even tracing or recovering a single private key this is why once you lost it then don't bother to recover.
What if they're cold wallets?
You should restate your goal as "I want to try to steal bitcoin by brute forcing private keys"
Post in all the worldwide papers. If you can do it, you can have all the coins but their value goes to zero. If you can't do it (like all the other criminals trying) then it's good press for the network.
At first!!! I'm not going to steal anything !!!
Secondly!!! I will only look for the key to the lost wallet !!!
The algorithm of the action, it is not standard, and it is not based on the search of options.
The algorithm is unique for each public key.