I don't agree with you here madmatt, you could limit the game so that it only displays subtitles for the nearest troops, not for every unit on the map. Something like the sounds you hear, the one nearest to you make the most noise. Besides in movies people also talk trough each other and the subtitles seem to be fine.
And although i would like to learn russian, german, hungarian, romanian, finnish i don't think it quite feasible...