We don't stop seeing people saying how they lost passwords, hard drives and so on, losing coins forever.
Is this rate of coins being lost bigger than the rate coins are being generated at?
1. You can't have good system protecting bitcoin network from 'loss' of bitcoin.
2. There is no way to tell that user of long unused wallet is being patient with his coins or is - for example already dead.
3. Lost coins are not a problem at all, it will make every other coin worth slightly more.
4. "Production" of bitcoins is constant and can't be changed.