Some suggestions
Corner Conveyor, similar to the T but L shaped for corners.
PVP Consent: nothing feels worse than spending weeks building your stuff, to log in one day and someone has destroyed it all.
Small Grid to Large Grid converter.
Door Timers built into the doors to close automatically without needing an extra timer block.
A Door with an alignment that will fit flush with Half Blocks.
Projectors displaying grids attached to rotors/hinges/pistons
Control Panel attached to Projector
Control Panel programable to automatically open a specific block.
The option to paint specific SIDES of a block rather than the entire block.
Telescope Block to allow you to look through it and move it around and zoom to see far off objects better, much like the turrets have.
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