This would allow you to specify only certain derived instances be included in listing/teleporting, or the opposite. This could be required for potential cross-mod interaction where something derives from AbstractHorse but should not be considered (but may implement isHorseSaddled()).

The framework for this basically already exists and can easily be done.

As it stands, new entities need to be added specifically by proxy. Outside of Animania, this excludes any mod that includes entities which are immediately rideable and do not allow ownership or taming of the creature in some way.

Hence, it should only be that entities can be blacklisted. All additional added entities outside of the scope of AbstractHorse (which should automatically be picked up), will require additional handling in the proxy system.

Specifically the global blacklist should be implemented in a way that makes it configurable from the UI.

Further to this, potentially implement a command similar to (or identical to) the one Horse Power has that shows you & copies onto the clipboard the name of the current entity you are facing.