Has anybody thought of hacking the induction coils from the pre backplate and popping them in a cheap evo 3d case? the coils produce a steady 5v dc, and if you attach wires from the contact terminals you can wire them in to the 3vo's usb port(if you're the warranty-voiding type) or to a micro usb head that plugs in to your 3vo. I definatley have the soldering/wiring talent, its the rest of the modifications I am a little weary about.
Although if anybody does it, POST PICS!
Also, all my palm chargers work. I haven't even used the htc charger at all yet! My car charger works fine. about a year ago the little white LED stopped working, but aside from that, it works great. charges my phone fine, and ive never seen any issues about overheating... check the usb cable you are using. if there is internal fraying/partial wire breaks, it can cause extra heat. that happened to my macbook charger before it caught fire