Then, how about adding dialogue options to one of the characters who speak any kind of alien language? In that case you wouldn't need a voice over. Maybe master Zhar?
And for the feats, maybe you could do something like this - after first training you get item with rank 1 of desired feat. After next training you will get item with both rank 1 and rank 2 of that feat, and then, after the third training, an item with all 3 ranks.