The chicken one would be simple enough, the Imp ones are where most the problems come from. None of them exist for a possessed creature so someone would have to code each one of them in.(Dropping off Gold;picking up trap crate; dropping crate which would have even more needed to have the game see if where you dropped it is where the trap should be;fortifying walls which would have to have more as well so the game can understand if your in front of dirt) Training it would have to somehow turn the dummies into actual things you could hit for it to work, or again, add a whole new thing for it and once again it would have to see if you are in the training room. You would also run into the problem of hitting your allies and maybe even killing them, so there would need to be something as well to disable such. They are very good ideas, I don't think any of us are saying otherwise. Personally I like some of the Imp ones like fortifying walls since that could be useful when you need to get that done fast, so possess an Imp and go. It is just that someone would have to put quite a bit of work into making such, and then if there is bugs, if it is balanced. Even something that appears small like this would be a bit of a task.