For Campaign Zone Changes can we get seamless transitions?

When enetering anohter zone like in the “Founding of Durotar” story it loads in a new map and a loading screen appears between zones.

Can we get seamless transition? (Where you walk and it go directly to the next map)(a bit of lag would be fine)

Or is that an engine limitation?

Also can we have an option between keeping it and not so that some zones can have a loading screen so we can see info on the “said zone”.

Well I got this idea inspired by CD Projekt RED.

Well, in theory if they can make the map large enough, but if it is not in one map, there has to be a loading screen.