I also liked caitiff's idea of being able to add options to your mek mount.
A typical day going something like this. Yeah that glowing mount over there is mine. My mount can out run kitin patrols while leaving a nice trail of sparklies for them to choke on. Oh what thats your mount. Please, that plain and dull mount is nothing compared to my mektoub mount of uber speed and strength.

Hmmm
It does seem to boil down to I want a powerful mount one that is fast and strong. So how about make mounts another skill tree and a new crafting skill for mount armor, weapons and jewels?
Doh, Not enough time to implement a new skill tree and crafting options. Oh well, I do think that adding a new skill and crafting options would be the best way to implement mounts though.
The skill tree for mounts could have things like increase speed, HP, regen and dodge modifier. And for crafting I would like to start making matis heavy mektoub armour. Although earings are silly for a mektoub maybe jeweled hoofs, sadles, reins, and blinders.
When it comes to what I want to see start working it goes like this:
1. Outposts
2. Outposts to capture
3. Flora and fauna around outposts dynamically interacting with each other.
4. Monsters assaulting outposts
5. Invasions of territories near my outpost
6. Monsters devasting entire regions because thoose are not the regions I want to have an outpost in
7. Fighting off hundreds to defend my outpost
OR
To see the kitin build up in strength the same way all homins do. Yes, Kitins crafting, and harvesting to supply there fighters with the needed umm ... Kitin stuff to unleash there vile plans of genocide.
Of course, the masterful guild, Veni Vidi Vici, would put a stop to these creatures intentions from there brilliantly chossen strategic outposts.
