Everyone wants mounts to make running around a bit more tolerable but I think they would clutter and ultimately ruin the game.
Gliders would be an acceptable middle ground. The world already has a plentiful array of mountains and cliffs from which you can jump from. Being able to glide a distance instead of dropping straight down would be a useful and enjoyable method of travelling slightly faster without completely ruining the experience.
Gliders would be definitely fun to use. Imagine if they added a “launch tower” to each town where you could climb up the ladder to a tall platform and launch from there… it could possibly even take you halfway to the next town.
So many new options this would open up…
But, I am not sure that it’s in line with AGS’s vision of the game.