I am also among the PPC supporters with worries about the 0.01 TX fee.
I like some of the ideas mentioned here:
- difficulty-adjusted transaction fee: The goal would be a tx fee with a relatively stable price, to discourage too micro-scale transactions (e.g. < 0.10 USD)
- transaction-volume-adjusted fee: The goal would be to protect the network from being overloaded with transactions. After a short transaction-volume spike the fee would increase. This could even have effects on a better stability, as it would discourage a massive sell-off from PPC wallets (price crashes and spikes are accompanied often by dramatic volume spikes).
But there could be an alternative idea: What about a second blockchain backed by PPC for microtransactions with low or zero fixed fees? That would be a kind of “altcoin” built-in in an extended client, perhaps merged-mined with Peercoin (if possible with PoS). It would be a descentralized alternative for IOU’s. This second blockchain could be renovated periodically to save hard disk space. The main PPC blockchain would then be only for large transactions with a high security level. (It’s just an idea, I don’t know if this is possible or desirable.)