UPDATE: do not add XPF (CFP franc) as a default unit
Besides XPF (CFP franc), the only other default unit is EUR. Adding XPF as a default unit looks more like a mistake to me. Setting it as a default unit would cause it to show prominently when typing queries like "100 USD" in Krunner. XPF is not used by many people to justify this prominency.
Edited by Pellaeon Lin