Generally asking to change an application to be “like” or “same as” some other application will not be accepted by many. SketchUp works the way it does by design. It specifically was designed to be not like AutoCAD and so SketchUp has been called the “unCAD”.
Game style key-controlled fly-through has been requested previously. It is not likely the current Walk tool will be changed, but a new tool might be implemented.
I would suggest looking for an extension instead of waiting for such a tool. Reason is some users have asked to have such a tool work like Unity, others like Unreal, etc. A native tool is not likely to please everyone. This is where extensions could “shine”.
Trimble is always improving the view rendering of SketchUp.
However, SketchUp is designed to be a modeler, not a presentation app. Presentation styles and shadows etc., should only be used in a presentation scene page for printing, plotting or image / video output.
Modeling should be done in a model scene using a fast style with shadows off, no endpoints, no profiles, no jitter, and textures off (unless temporarily manipulating textures.)
If you were speaking of ThomThom’s VertexTools, as @dezmo showed you can manipulate veties using the Move Tool.
I’m not sure what you are trying to say. Does changing the global model scene settings help ?
Beyond this, each scene is actually able to have it’s own delay and transition time, but the native GUI does not yet expose these settings. There are extensions that do allow you to set per scene times and even do more to control animations. Again, I suggest looking at some of the animation extensions.
While I myself was used to the way viewports and paperspace and modelspace worked in AutoCAD, LayOut is a separate application programmed using a different framework than SketchUp. Combining the two codebases is probably too costly and would be too time consuming.
Since I don’t use LayOut much this doesn’t bother me much. There are quite a few other users who have no need for LayOut’s paperspace, so having the modeler as a separate application has allowed the company that owns SketchUp to deploy modeler only editions (ie, desktop Make and the web editions: Free and Shop.)