Hello i think that there should be vertices editing for better map quality or terrain perhaps

As in moving the corners of mod objects to create your own shapes?
Sounds like a good idea, I imagine people would use this to a great extent and it would solve some visual problems mod-makers face today.
Perhaps add an option to disable collisions in objects while we're at it.

yeah, or add vertices and alter those as well, it could make for some amazing mods! also dont say the W word... you might startle some people but no 'colliders' would be nice