[Vibrant Q&A, Help & Troubleshooting] PlacidCat:
I reverted my settings in devil config to the defaults, so nothing remarkable there. As for your suggestions, please see below:

1. Perhaps, but consider this: after charging overnight, my battery drained 20% in less than 2 hours. The battery usage chart indicated that the Android System process kept it awake the majority of that time. Rebooting the phone causes it to have a much more modest drain, my "Awake" status bar isn't a continuous green bar but, rather, a broken bar as I would expect. It would seem it's not just Exchange at fault, nor is it simply a battery calibration issue, otherwise I wouldn't see the excessive drain in association with a "keep awake" process. The measure of charge drop can be directly correlated to the keep awake status - the less the phone is kept awake, the less my battery is drained.

2. I've been using Froyo for 1.5 years and have had the same sync settings that I have now in Skang - hourly for Exchange and default for Google. After 16 hours uptime in Team Whiskey's ROM, I was generally down to 50%-60% battery. Now I don't even last 6 hours with this issue.

3. No more widgets than what I had in Team Whiskey's ROM. My calendar and Google Voice inbox are the only two. No live wallpapers either.

4. WiFi is on but, again, this is exactly what I had set in Team Whiskey's ROM.

I'm not trying to trumpet Team Whiskey's Froyo ROM for the sake of promoting it. Simply trying to indicate that, from a settings standpoint, I got apples to apples here. I already was aware of your suggested means of getting extra time and, not trying to be dismissive, but I prefer my settings and I know it should be possible to get better battery life with them. Perhaps I should have been more explicit in my question - does anyone have a means of squeezing extra battery life using the Devil Kernel Config. Deep Idle and min clock do a great job of saving battery... and sending my device into a SoD. If there are specific clock speeds to avoid/try, that would be helpful, not to mention if there is anyone who actually got deep idle to work. In concept, it is great.

Perhaps, now that I've seen these two "keep awake" issues (Exchange and Android System) this thread is less relevant - I'm convinced that I will get similar battery life to Team Wiskey's ROM if I can just keep certain processes from keeping the phone awake. Admittedly, "Android System" is not the most helpful in diagnosing the issue as it appears to be a dumping ground for miscellaneous processes' statistics rather than a specific process. In any case, I appear to have an easy way of reproducing the issue - charge for an extended period of time and remove from the charger without a reboot. Rebooting seems to fix the issue until the next charging cycle. I can live with that for now.

Thanks for your input, samsgun357. Sorry I wasn't more explicit in my original question as well as measures I've already considered - I could have saved you a little typing. :o

If anyone else has noticed this issue with "keep awake" processes that go away after reboot, I'd appreciate input. I'd like to see if there's any way I could help to uncover the root cause of this issue.