I'm with the OP on this matter.
Retards jumping all over the place looks ridiculous, and it does indeed break my immersion, like some players who insist on their avatar looking completely wrong, with messed up faces, proportions and outfit.
And to the people who would argue that one does whatever they want, just look at the witcher 3, would anyone play that master piece if Geralt and the main characters looked like disproportionate clowns ? I bet not.
Now in PvP, sure, it's sad that jumping all the time is a necessity, but well, it is how it is. In PvE though, if i see anyone in my group/raid doing that, i just kick the guy right away. I will not stand random clowns making my game look bad. It's already an insult to have to stand the sight of those clowns when passing by Khemi.
I really wish AoC was more stable and one could not jump aroud to abuse the desynch and latency. I also wish jumping would consume stamina, mana and energy in significant amounts, that, would be grand.