PCM reprogramming ideas

I'm planning on pulling the PCM and sending it out for reprogramming. The impetus is that AIR pump system is throwing a code and I can't find anything wrong with it. So I figure I will do the AIR pump delete. While I'm at it, I'll have them do a few other things like tweak it for better power and MPG and not have the locks lock when you put it in drive.

What PCM outfit is the best to work with?
What ideas do you all have for things to reprogram?

If you have electric fans, you could have them programmed to come on at a lower temperature.

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These are two I have used. I worked on my shift points and line pressures with a fellow member and had my 4L60E shifting softly as light throttle and gradually got firmer as I put my foot into it. Have the VATS removed, speed limiter removed...