So about jump.

[Preypacer]

Okay so the issue isn't so much with jump as it is with all objects not reacting as their real world counterparts would in relation to jumping. I think that's a bit far beyond the scope of this game.

... seriously?

You're asserting that it's beyond SE's means to determine where people can and can't jump, in a virtual 3D environment entirely of their own design and construction?

Two words: Collision Mesh. An invisible, convex mesh that is positioned around or above another object that prevents objects from passing through them. They're used all over the place in games. They're pretty much a mandatory part of 3D modeling for real-time environments. Yes, even in FF games.

Now... Take a guess how SE could stop someone from jumping up on top of a small tent if they didn't want them to?

Hint: It has nothing to do with simulating real world physics, or anything "beyond the scope of the game".