Parsimony is also a term, used in biology, which means accepting the simplest solution. Almost like Occam's Razor.
Just throwing that out there, though, I don't want to take sides here. I think it's sad that so many people are making fools of themselves over something so minor.
Call her Malicia if you want. I won't even state my personal preference; it's irrelevant. You can feel free to call the characters whatever you like, it's not like there aren't already tons of different names for FE characters out there. Ira/Ayra/Aira comes to mind. Maybe instead of venting here, opinions on name changes can be taken to the FE4 boards. Just like whining here, you'll accomplish nothing, but at least you won't annoy a dedicated team working hard to translate a game we all want to play, and drowning out all the serious suggestions.