I'm no EE, but if I'm understanding this correctly, having all four run off of one resistor will lead to failure do to uneven draw?
Would the damage occur after one fails and the resistor is doling out that extra 1/4 to the 3 remaining lights?
If the damage were to occur after failure, would it be possible to just replace the broken led asap?

Just speculating, I'd -love- to have illuminated buttons, and my experience with electronics is severely limited. I would be willing to spend time practicing for this, as it seems the idea of one resistor would be a lot easier to put together than having to put that resistor pack on the board. *scary*

thanks