It would be quite a feat for GOG to get the first two MechWarrior games. The licensing is all over the place. Developed and published by Activision, but as Arkose mentioned, Microsoft now has the video game license. MechWarrior is based on the Battletech franchise created by FASA and now owned by Catalyst, who is owned by WizKids. IIRC, when Battletech started, they licensed some designs from Japanese companies, such as Studio Nue. However, because US copyright law is pants-on-head retarded, Harmony Gold, producers of Robotech, actually had the license for the designs, meaning FASA's licenses were pretty much null and void. Fearing legal action by Harmony Gold, FASA retired these designs (they're referred to as "Unseen", because Fasa/Catalyst can't publish art for them, though they still exist in canon) which were mostly designs for the mechs in MechWarrior 1 and their IIC variants in MechWarrior 2.
According to the BattleTech Wiki, however, many of these Mechs have become "Reseen" from recent agreements, so hopefully it will happen eventually.
I still have my old MechWarrior 2 CD, the Diamond Monster 3D edition. Its soundtrack has never left my iPhone :D