I voted for #1 but relevant question is sending 2 items costs more than 1 and creates more failure possibility's.
Thinking of this drawback against the Problem that Version 1 will not be the last and that after some time it's 1 patch more or less I don't see the relevance in the long term.
Except for the Big wohaa when opening the package inserting the DVD and during install searching and reading through all the goodies like the god old days...
Offtopic: they should have named "gog" "god" with the possibility to buy physical packaging