Oh, I'm fine with that as well, actually. Going with the original language is A-Okay, in my book. It's when they decide to speak English with said accent that I feel a weird middle ground has been hit. I'd rather have one or the other.
I actually found it annoying when few if anyone in Valkyrie didn't at least speak in a German accent, especially in hindsight when X-Men: First Class- a superhero movie- bothered going all the way with actual German speech (along with Portuguese and Russian; yae for authenticity). I don't find foreign accents anymore distracting than people of foreign ethnicities in a film. But to each his own. =P
But like you said, to each his own. I'm not going to waste anyone else's time anymore with my preferences. xP