The request to be able to mod in new (and sometimes, to mod out old) names has been made. So far you can't do it.
I've never seen anyone change name, although it is always a bit confusing when a new recruit has the name of a commander you already have.
It'd be nice if duplicate-named folks got a non-duplicate second name assigned, so instead of getting "Pons" and then "Pons", you could at least get "Pons" and then "Pons Lars".
PvK