Garry's Mod allowed props to change on-the-fly by looking at any prop on the map - I definitely found this too powerful, but I loved the having the freedom of choice.Allow props to spawn in from a list (you decide what you want to spawn in as).What I'd love to be see tested in particular would be: I'm not sure what the solution could be, but I'd love to see an attempt to solve it - maybe with an 'advanced Prophunt mode'? A mode where more power is given to the props. It's a tough mode to balance, since you can't balance it for new and experienced players alike.
After a day of playing, it's becoming so easy to learn the limited set of props.