That's great news. I think Call of Cthulhu: Dark Corners of the Earth and Sins of a Solar Empire are worth looking into. Other than the fact that they don't work (CoC: DotE says failed to create device, SoaSE has rendering issues), they both behave weird with resolution enumeration:

Those are two custom resolutions I added. If I remove both of them, the games will enumerate NO resolutions. Trying to limit resolutions via config file seems to have no effect. Natively both games enumerate all resolutions on my system. Obviously games commonly don't support either of those resolutions so other games suffering from the same issue might just crash.

Company of Heroes (demo)

Starts now, but invisible mouse cursor, invisible movie subtitles and when it comes to 3D rendering...:

Civilization IV

Works now. Resolution forcing suffers from double cursor issue. This game could really benefit from resolution forcing too 🙁.

Heroes of Annihilated Empires

Low shader quality:

High shader quality:

So only low shader quality usable. Would still very much be preferable to run it with dgVoodoo if resolution forcing worked, but it doesn't (the game sets its resolution regardless of dgVoodoo setting).

Titan Quest (demo)

Works now. Resolution forcing/antialiasing creates minor issues.