I searched for a recent topic like this through the forum search and Google and came up with nothing... although I swear I saw one like it (or made it myself) in the not-so-distant past. Anyway, since nothing came up -- and since tastes and lists change (and I do think GOG sometimes actually looks at compiled lists in posts)...

What medieval fantasy games would you like to see GOG add to their catalogue?

Medieval (1998)

Demon's Rise -- War for the Deep

Demon's Rise -- Lords of Chaos

Dragon Age II

Dragon Age Inquisition

Gloomhaven

Shieldwall Chronicles Swords of the North

Skilltree Saga

Warlock of Firetop Mountain

Get Medieval (1998) by Monolith Productions - not Medieval (1998), but Get Medieval which was released in 1998.

I'm going to add a few that I'm sure will come up...

Dragon Age II
Dragon Age Inquisition

And a few that probably wouldn't...

Gloomhaven
Shieldwall Chronicles Swords of the North
Demon's Rise -- War for the Deep
Demon's Rise -- Lords of Chaos
Warlock of Firetop Mountain
Skilltree Saga