First off -- please downsize images before posting more; these make the page too wide.
I think the cooling is primarily conductive, not from internal air flow, so I don't think the fins on these devices would help much. Solid pieces of copper with flat surfaces plus Arctic Silver might be an improvement -- or not.
If I were pulling my 10v apart again (I've done it twice) I would either leave it as-is or add some AS to the existing heat pads. But I don't plan another disassembly (before I couldn't locate my AS but now I have).
Netbook: Mini 10v, BIOS A05, OS X 10.6.4, 2 GB RAM, 160 GB HDD, BT