I'm the same guy that asked your opinion about the improved wing-flapping thing. It resulted almost everyone liked it but found it useless in the game.
A similar question regarding ground mounts:
speed depending to the inclination of the ground
I don't know exactly what's the % inclination at which you fall, but my point was to give an exact directly proportional % increase or decrease of speed over the % inclination.
It's like:
20% downhill = 80% speed
0% (plain) = 100% speed
20% uphill = 120% speed
and so on...
up to a maximum values before the falling/collision
It would be an interesting feature for pvp, people would have to consider better the pathing to flee/reach an area faster.
(and what about also the same feature for non-mounted running?)