150, 200 and 250 mounts.
Professionachievements for all the professions, like if we take Jewelcrafting for an example it could be: Max level, X designs learned (many steps like 10, 50, 100, 250, 500, 1000), X amount of gems crafted (many steps like 10, 100, 1000, 10000, 25000, 50000, 100000), X amount of ore prospected (many steps....), To have crafted the new JC mount.
Fish caught, 10K, 25K, 50K and 100K.
And for an existing feat of strength, Hero of Shattrath, it should give a title with the same name.