So are the other variations of the horde lip jump 'OK' by virtue of being among the same class as the one shown in the video? Or is it banned?
The variations of the horde lip jump are fine... you end up in the same place in the end. This goes for all jumps in the video -- if there is a slightly different way to execute a jump then it is okay.
And there are other places to jump over the horde fence... ones that don't require invisible nooks and are much more 'open and obvious'. Are these included because they are among the same class, or are they banned? i.e. -
Open and obvious jumps over the fence like that are fine, as that is not even remotely an exploit.
Since the stumps were shown in the video, it calls into question what constitutes a jump. So would this be a jump, and thus be illegal?
The problem with allowing something like this is that it makes things uneven. Horde side would have (easier) access to this , Alliance would not, something like this could be made legal if another jump on Alliance side was also made legal (perhaps jumping on top of the flag on Alliance side?) This can be discussed within the rules committee
What about the other stumps on the field that were not included? Are they banned? Or are they included by virtue of being of the same character as the others?
i.e. -
I considered including this jump but opted against it, this one is open for debate as it able to be used from both sides (it is a 2-way jump). The reason we opted against it was because a speed boost is required to complete the jump on Horde side, making it uneven. The other stumps not included are fine as long as there is no clear exploit used to get onto them.
This may seem like splitting hairs, but if an FC were to do something extremely similar, yet not in the video, it could cause controversy as to whether it should warrant adverse action. As evidenced, you're probably going to want some room to pivot on these rules.