Yes it could be reduced, but I don't want it reduced.
Peercoin is suppose to be like a savings account. You only move large amounts, very infrequently. So you would never buy a coffee with Peercoin. What you could do is move $500 in/out of an exchange very quickly.
Also,you never have micropayments with Peercoin. It does not make any sense to transfer less than 0.01 PPC. They do that to keep the blockchain small, and fast.
Look what happened to Bitcoin. They have micropayments and it is ruining their blockchain as a result.