The adaptor can be used for other devices than the TF536, and some maybe a little more power hungry. I only took power from the two +5v pins on the CPU. The traces to these pins are only about 8-10mil by look of it.
There are two pins that, according to the datasheet for the 68000, are not connected. However, on the A600 schematic they are also +5v so these could also be used.
I'll get round to tweaking the boards at some point