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Yes, EA would have been more exciting, as they acquired some of the finest US PC game developers ever (plus Bullfrog), but Activision isn't too shabby either with their great Sierra/Dynamix portfolio.
Here's an incomplete list of future possibilities from GOG's cooperation with Activision:
Sierra On-Line:
Quest For Glory I-V
Leisure Suit Larry 1-3, 5, 6
Laura Bow: The Colonel's Bequest/The Dagger of Amon Ra
Conquests of Camelot/Conquests of Long Bow
Manhunter 1+2
Police Quest 1-4, SWAT 1+2
Mixed-Up Mother Goose/Gold Rush/Eco Quest 1+2/Freddy Pharkas/Torin's Passage/Rama/Lighthouse/Shivers/Pepper's Adventures in Time
Outpost1+2
Impressions Games: Pharao/Zeus
Papyrus: Nascar Racing/IndyCar Racing
Cocktel Vision: Gobliiins/Gobliins 2/Goblins 3/Woodruff and the Schnibble/Inca1+2/Lost in Time
Dynamix:
Stellar 7 series
MechWarrior/Metaltech/Earthsiege/Starsiege/Tribes
A-10 Tank Killer/Red Baron1-3/Aces of the Pacific/Aces Over Europe/Aces of the Deep
The Adventures of Willy Beamish/Rise of the Dragon/Heart of China
The Incredible Machine/3-D Ultra Pinball/Front Page Sports series
Betrayal at Krondor/Betrayal in Antara/Return to Krondor
Activision: No One Lives Forever 2/Battlezone1+2
