Well, i hope it's a fix... All those of you who have problems with narrow angle/low power/no reflection, etc. could try something like this:
On the left is a pic of a regular IR pen. On the right is a pic of the same pen but with IR LED turned in the direction of Wii. After that you can still fine-tune the tip, etc. You could even bend the legs on the LED, so the LED is still at the same position as on left pic, just pointed in different position. Also, this way there is no more loss of sensitivity because of the distance in back fit pens.
The only thing to remember is to hold the pen in the same position, so that LED is always pointint in the direction of Wii. Right?
I tried to make some quick-tape-battery-led monsters and the above theory works just fine. Just need someone with skills and tools to make me a proper pen now.
yo!