I made a mod to lower the structural integrity of the blocks, so things "randomly" fall apart (well, it feels random but a block always has to be destroyed or placed/upgraded to retrigger the SI calcs, but you step on a trap block or loot a trash pile and the blocks destroy and SI recalculates) and building is trickier. All it required was lowering some numbers related to SI.
i imagine you could bump those same numbers way up (or i guess, make the block "weight" really low) and then you could "build big". The only downside is that SI calcs are still on so *maybe* the game churns a lot of CPU cycles when a block is destroyed/upgraded (to handle all the SI calcs over a larger length/area of blocks?).
I don't know if there is a limit (prob hardcoded) to the SI block calcs.
i guess it depends on how "big" is big, and out of what materials. Maybe if you know "yes, we want a huge building out of concrete" then you only bump way up the block stability for only concrete, so "building" it is more fun/challenging (scaffolding, etc) but once at concrete you can go big (remove scaffolding)? This way only "big abnormal SI calcs" happen only when concrete blocks are involved (if i understand how it works correctly).
