I have noticed since joining that the usage of coins is a lot and for some things it's not necessary. For the ones I'm referring to are the following:

Mucking a stall
Send to pasture
Transfer to/out large stable
Transfer to other countries

I know it's not much but those things shouldn't cost any coins to perform the actions and wasting coins. If these actions can be fixed to be no cost it would be great and helpful to players. Being it's about the players and making it better for them and the experience.