[BrianG]

Since these ESCs don't produce a TON of heat, Al is fine IMO. I was just curious about adding metal tabs because it seems like these ESCs are getting large for high current. I figured if say, 10-12 FETs were intergrated into one long package with adequate cooling and terminals, the size could be reduced and manufacturing simplified.

Also, Al is lighter, cheaper, easier to obtain, and easier to work on.