Thanks for the interest. Now I obviously have a vested interest, but we play on anything from 2 foot square to 4 foot square.
I've seen folks play with a variety of scenery - from basic bits and bobs to the same kind of mental efforts I tend to go as a terrainhead.
There isn't a great plethora of modern terrain out there TBH, but Ainsty Castings do a dedicated Spy-Fi range and Copplestone do standalone doors and 60s computer consoles in their Kiss Kiss bang Bang range.
Sarrisa Precision have just started some laser cut gantry and walkways that would work too. Plus there a fair bit of modern cardstock scenery out there.
Kev Dallimore had a recent game on some nice floorplans with standalone Copplestone and Ainsty pieces. I'll see if he's happy for me to share the gallery to give you an idea of what can be done for a quick, cheap and good looking game.
If you are at Salute, we'll have some quick play 2x2 foot boards that you can try out the rules on.