Replacing Cryptonote rings with RingCT value hiding is probably incompatible with microtransactions-at-scale in all current block chain designs because (including Monero) they don't remain decentralized at-scale, but not that was Monero's focus any way:
Although sub-penny microtransactions are not economically feasible with credit cards
nor current crypto-currencies because the fees are too high, these systems could in theory lower costs enough to lower fees to a percentage of the value of the transaction (
assuming transaction values are not hidden with homomorphic encryption, because in which case the oligarchy centralization inherent in these system
has an incentive to raise to fees to what the market will bear cutting out lower valued transactions).
...
Dunno if i grasp your intention at full spec, but microtransactions we´re never intented to be populating the mainchain --->