Allow Limited Block Compounding
Some blocks on small/large grids are literally same (like Interior Light, Camera).
Others have same functionality, they just take N*(5^3) more space (Programming Block, Timer Block) - that is a big waste of space.
If some small grid blocks would be allowed to be attached directly to large blocks, their large grid counterparts could be removed from game.
Maybe allow some small blocks to be attached anywhere (in 5x5 "grid") on any large block (like Camera, Interior Light, Button, Control Panel, Sensor, Sound Block). Even allowing up to 25 such connections per (valid) face of the block.
Some others (Timer, Programming Block, Beacon, Text Panel, Remote Control, maybe Antenna, Ore Detector) via special block - like Digi's Electronic Panel mod https://steamcommunity.com/sharedfiles/filedetails/?id=514760877 ... but without the quasi-rotor part. Even filling up to 5x5x5 (minus panel) to create 'automatization core'.