You know what you can develop is something that Encrypt the Private Key when you have to "sweep" it from your Paper wallet to your desktop wallet.    It will be nice if someone will not be able to keylog your Private key, when you are in the process to sweep it from cold storage to your Paper Wallet.

So you can go offline when you "Copy" the Private Key, then this software encrypts it and then you go online again and it is in memory in a encrypted format and once you logged into your Online wallet and you Paste it.. it will decrypt it and insert it in the field to sweep the wallet. 

It is always stressful when you have to sweep a wallet and you do not know if it can be intercepted before you are able to sweep it.