> If we replaced every neuron in your brain, one by one, with a silicon equivalent, would you stop being conscious? At what point? Would you be able to tell?

The idea that we could have a silicon equivalent at all is already a huge assumption. For starters, the silicon equivalent cannot grow or kill neural connections or neurons as needed. Biological systems have a number of properties that silicon systems just don't at the moment.

But everything that's different seems like an arbitrary requirement. I hope I'm also conscious in moments where I'm not actively growing/killing neural connections.

You can probably simulate (in theory) the creation and destruction of neural connections the same way we simulate "wires" between elements in an FPGA.