Script Blocks

Well this is a pretty basic, yet useful idea:

The "Script Block", basically it's a computer with no storage system (can work with only one program at time) and no screen, it could have a single disk drive but as it could work with peripherals may not be needed.
Must have one indicator to know wich is the front face.
So, it may look like a disk drive with the ability to run a startup script, but also the only program it can run may be loaded via rednet, if it's loaded this way the host computer must be on to let the block work.

If it can work with peripherals, that would mean you'd just have to attach a disk drive and it would have its own storage again. I'm not sure what role such a block would fill that couldn't be filled by a normal computer.

the idea is that, in such case, it can only run a startup script, but in fact, main goal is to run a script as if it was a computer, but via rednet

So… nsh?

I'm guessing this would be like a hybrid pc/command block, but a computer can do exactly this already, it's not clear what is gained by adding a limited computer that can only do this…?

It'd sorta make sense if regular computers were expensive to make, but… they're not. In some circles ComputerCraft is considered OP because of how crazy-cheap everything is. Of course, CC itself is pretty slow at resource collection compared to just about anything else, so that balances out nicely, but the fact remains that the only ingredient for a computer that isn't absolutely trivial to come by would be the single unit of redstone.