I'm doing this as a Hobby. Diablo and WC2 both took me 1 day, so not much of it is really detailed.
These don't include the Storm header, because I intercepted them at the program level (SNetSendTurn and SNetSendMessage from Storm.dll).
Diablo: http://code.google.com/p/vgce/source/browse/trunk/docs/Blizzard/Diablo/StormClass.txt
Wc2 Class 1: http://code.google.com/p/vgce/source/browse/trunk/docs/Blizzard/Warcraft2/StormClass1.txt
Wc2 Class 2: http://code.google.com/p/vgce/source/browse/trunk/docs/Blizzard/Warcraft2/StormClass2.txt
Diablo 2 (Client): http://code.google.com/p/vgce/source/browse/trunk/docs/Blizzard/Diablo II/client.txt
Diablo 2 (Server): http://code.google.com/p/vgce/source/browse/trunk/docs/Blizzard/Diablo%20II/server.txt
Client packets intercepted from send() in D2Net.dll, and Server packets intercepted from Fog_10224 in D2Net.dll.