If I may make a suggestion about the maverick names...
I was a little bit confused at first too, because I think it was the manual that had different names for the mavericks, where-as in the game their names were different.
The way I made logic out of it, at least for myself, was that one name was the type of maverick, and that the other name was that maverick's actual name.
Maverick Type: Burn Dinorex
Maverick's Name: Mattrex
So, for instance, there could be a small group of the same type of mavericks (a group of Burn Dinorex'), but out of that group, only one would be named Mattrex, and maybe another would be named Scorcher or something like that.
You could do something like that with Chill Penguin for instance:
Maverick Type: Ice Bird
Maverick's Name: Chill Penguin
That being said, I actually like both names in X5.
By all means this is your hack and do what you want with it, but my suggestion was to use both names in that manner:
In the middle of the screen, it would be MATTREX, just like in the english version of X5 right now, but on the right side of the screen, it would say "TYPE:" and the type of maverick it is (BURN DINOREX).