I'm not certain if you enjoy remakes or not - but I think GOG is pretty much single handedly responsible for making them a thing. Things like AoE2 (Age of Empires) HD & DE probably wouldn't exist if AoE and AoM (Age of Mythology) didn't get a bunch of surprise sales on GoG. I'm hoping it'll also lead to some of the older IPs that died off with the likes of SSI getting resurrected into new titles - Imperialism 1 & 2 were pretty amazing games long before the likes of Victoria 2 came about.