Heatsink size is on par with other laptops in the market, it's pretty much the status quo. In the past when laptops were heavier we got to see copper used in heatsinks as well, but all-aluminium heatsinks have replaced that. I don't think heatsink size is the problem, I think processor efficiency is what really needs improving. I doubt we'll be seeing changes in laptop cooling systems very soon, though as mentioned it would be nice if manufacturers allowed more customisable options when it comes too cooling configurations (subject to limitations of course). I am so trying out this hack when my T4210's warranty expires.