ah, still RROD prone, then. I'd recommend xclammping it. YOu'll find some good guides on xbox scene and such, however, the basics are using short M5 screws and spring steel washers to replace the stock xclamps with bolts screwing right into the GUP and CPU HSF threads (and I never bothered doing the overheating step on my old xbox, that is present in most RROD repair/xclamp guides, as mine was a preventative measure).
Otherwise, clear acrylic case, LED fans, and clear acrylic fan shrouds (makes more sense with a clear case
) are all I can think of right now. Maybe watercooling if you are still into that. I haven't heard of any SSD mods, yet. Maybe with JTAG'd units, but I like to retain XBL functionality on mine