I frequently do workshops and use the addonpack as a sort of second nature so I always say that the students should download and install the addonpack.
It is however difficult for quite some students to download and place the addonpack correctly.
How about having a download addonpack button in crack.exe that would download and place the addonpack so that it works.
I am not an expert, but the difference from the already existing links to download .net and directx is very big, it would need to download and unzip. is that such a big difference?