Just a few off the top of my head...
Jumping - need I say more
Swimming *Under water* (new skill maybe, you can stay under longer with practice. Also, could make for a new helmet craft w/ breathing apparatus).
Explorable caves and tunnels (instanced and non-instanced - something we can get lost in) on land and under water.
Material upgrading - take those 10 useless basic mats and turn them into 1 fine, 50 fine = 1 choice, 100 choice = 1 excellent etc.. (just a thought

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Dyes
I believe the title for 150 Defence Affliction is Summoner so how about some skills that are actually summoning something
Pets that you can capture and train for riding, fighting, digging (ragus), scouting (look through your pets eyes) etc.. It would be hilarious seeing a tryker guild riding off in to battle on their yubo pets.
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That's all I can think of for now but there definitely needs to be more imagination put in to Ryzom. Hope the Devs have some surprises for us.