Transition over module gaps (cross posted from tips & tricks

[JaBear]

However I'm now wondering if I'm over engineering this for my purpose.

Gidday Steve, firstly I’d like to say you’re not alone in over engineering stuff.
Modules are always going to look like modules; at least with you doing all the scenery yourself the joins should not be too obvious.
Here is an example of a join made more obvious because the face board is not painted and different scenicing techniques....
   
But here is another with the face boards painted.
   
This is the local modular groups method for joining modules.
   
Hope this doesn’t confuse the issue,
Cheers, the Bear.