I think that this is the most logical naming but, as a Spanish talking user, Mili-Monero sounds like "My lemon tree" (Mi limonero)
On other side, people doesn't need to say "eurocent" because there is no other currency at streets, but it will be a must when cryptocurrencies are every day use.
IMO there is no need to search names at the moment, when mass adoption occurres, people will find a naming for pennies indepently of what we think now or in the future.
(Sorry about my English)