I agree. If this was just a sounds update, couldn't you just upload the new sounds and tell everyone to override the old files instead of having everyone download every single file again. Even with high speed broadband, this download will take me at least 20 minutes to fully download.
If it takes you 20 minutes with high speed broadband, there is something wrong with your connection then.
I don't use FiOS or Cable, I have Verizon's High Speed Broadband and that 152MB download took less then 10 minutes for me.
Besides that fact, I also do believe if it were small upgrades, it would be better to upload the fixes instead. Unless of course it was an overhaul of the complete folder.