I think that programmers Larian Studios will agree with me that you know is bad programming.
I understand that you think that if the game programmer will sit 6 months without getting up , then it certainly will work 60 times faster than the original , but unfortunately so in real life does not happen

I think you should take a more cautious , it is not is not a game "Contra" and speed I think it will not solve anything .
The only thing I can confirm that when I was joined in cooperative game brother, I was expecting it downloads more than 5 minutes that can not hurt ... my loads do not exceed 1 minute ... maybe a co-op mode download something wrong ...