The best way to solve the feet is to use a plugin to use the real idle motions from the generator. Because it has animations for idle, walks, runs as separate animations, normal rpg maker is using only the walk animation for the walk and idle. But the gen does have the normal idles so they can be used if you set it up.
Viewing post in Character's feet are raised when idle
https://hakuenstudio.itch.io/hakuen-studio-character-frames-for-rpg-maker this is one. Also Galv's plugins also have similar.