I have warmed up to LEDs too. Warm white 1-SMD-5050 with a frosted dome are a good replacement for incandescent. There is a considerable reduction in current draw and heat. When you have many games turned on at once it adds up quick.

One thing i get a little OCD about LEDs in the GI is the strobe light effect. I think it bothers some people more than others, but when the ball moves fast I can see the strobe light effect of the LED turning off when the AC volts get near zero. I have been putting in 5vdc switch mode power supplies to do the GI. No more strobe flickers but you have to hack the wiring harness. Most games but Bally/Stern its really easy to do. Just put the SMPS near the transformer and add plug that mates with the GI connector usually uses near the transformer.