In-jokes, developers, history? Just tell us if Crusader ever shipped in a SKU that included a Wing Commander game, already! You're in luck: it did!
Crusader: No Remorse (the game released on GOG yesterday) was re-released as part of something called a "Space Adventure Pak," bundled with Shockwave and Wing Commander III: Heart of the Tiger. The Space Adventure Pak came in an enormous rectangular box and actually included all the manuals and posters that shipped with the original game.
Crusader: No Regret was later included in the '3 Mega Game: Science Fiction' pack alongside Privateer 2 and Wing Commander IV! That's one hell of a "pak"! The 3 Mega Game release came in a regular box and dumped all the original manuals.