Does it bother anyone that your toon can understand all these alien languages. I would much prefer these aliens speak English (basic) with a accent, it would seem much more realistic cause that is the main language used in the universe. Also I find it really distracting when trying to read the text having this gibberish sound in my ear. But that is just me i guess
Universal Translator. The Exile had one in KOTOR II. Revan on the other hand understood many many languages without use of a translator. And since your character is the elite of the elite, it's not really much of a surprise that he/she can understand more than one language.
Note: Your character does not have to speak those languages, as most aliens understand basic (and can even speak it though they don't think they need to.)
So for me, no it's not a problem.