ZDoom

I haven't made any plans how to expose bobbing to scripting yet so this will have to wait until the time comes.

Yes, but can become exhausting especially with weapon packs that are really only played temporarily. However, with such a statement like that: Why is wbobspeed part of the engine when we can do it ourselves with Weapon.BobSpeed? Why not allow more acessibility to the players-- just choosing how they want to make their perspective look like to their taste in this case?

You can do this yourself using A_OverlayOffset.

This could make movement feel a lot better for some that use 'movebob 0' and prefer to be as accurate with weapons as possible.

https://mantis.zdoom.org/view.php?id=438
0000438: Seperate weapon-sprite bobbing from screen-bobbbing

As seen in Zandronum Community Client with the command 'zcc_viewbob'. (Source code available)