I feel that these 2 games, Dual Gear and First Feudal need trainers done if possible. I think they would be fairly popular.
If these games are popular with WeModders (the WeMod software automatically detects how many people at WeMod own the game) then they may appear in the trainer development queue in due course, which you can see in the WeMod desktop app.
They are already (automatically added) in the WeMod library. Which means the WeMod software is aware they exist. But currently do not have trainers.