Currently how kneel behaves is that your character goes down to one knee for a few second, and then comes back up. Could we have kneeling be persistent, or even a entirely different emote that persistently kneels? Maybe a kneeling /cpose while sitting?

In the role-playing community, it is often a tall character (A Roegadyn, or an Elezen) wishes to kneel to speak to a short character (A Lalafell). I think this minor adjustment would go a long way for creating fun emotes for everyone.