Horse idea
 

Here, maybe this is a bit better then "horse Armour".

Ability to shoot a bow from a horse without getting the arrow out first, and an actual Gani for it.

**Gani for entering a castle courtyard with a horse would be neat as well

Good suggestions. :) I think that whoever develops GK should take some of these suggestions and make a list of the ones that he/she wants to put in GK.