Thank you.
Yes you will be able to import custom meshes as its all part of the GO system. I used a 1m grid with 0.25 subdivision, in Skyline scene set the grid snap on and choose the 0.25 snap option the GO is set to snap to 0.5m grid. I have found this gives a nice range of flexability whilst keeping a fast snapping workflow. Quick to place with the GO and easy to move and place with scene editing tools when required.
Nice balance, you make it look easy.
lol thanks this has been a long road to understanding the whats and whys of modular level design. There are so many things to considder such as how to cap holes, joins, stop z-fighting, clostraphobia when in game and what would be the universal base scale of each asset type as just to name a few. Then of course learning Blender, sculpting then how to paint it with a color range that looks good with PBR. For now I am painting with substance until a better solution comes along. I did explore Quixel Mixer, this looks good but lacks many features for now. The current design scale is working around a 4x4m floor and 8x4m walls both at 0.25m thick plus a 0.1 wall width to stop the floor sides showing. Everything else is then to be designed to fit with this or multiples/divisions of this.
So much still to learn and I am sure some of it will be back to the drawing board as I encounter issues along the way. All part of the process