I posted a month ago about considering rooting my Dinc. I'm here to report that I have Rooted, and No my phone is not bricked. I have to say it is the best decision. I'd like to know more about backing up with Astro, so if I ever Un-root it, I can save my data. I haven't messed around with Rom's yet. I tried Skyraider, but I had every single app force close, and I haven't had the time to research the problem, but with a nandroid backup, I was able to get the stock Rom back up in no time.
My biggest reason for Rooting is the battery. I had read an early thread about deleting the battery stats file through the Clockworkmod recovery. Well I can tell you I no longer need to bump charge after doing this, and the battery lasts as long as it used to with a bump charge. I only charge my phone with the power off over night, and it has been great. Just make sure you fully charge the battery before deleting the battery stats.
For those that haven't seen that thread, here are the directions.
Fully charge the battery with the phone off. Bump charge to capacity. With a full charge, Reboot into recovery and under advanced, click delete battery stats. When you click it will take you to a menu with a bunch of No's and one Yes. Scroll down and click the yes. Then reboot. Once you have rebooted, run the battery down UNTIL THE PHONE TURNS ITSELF OFF. Don't turn off at 5% or when it says running low. Let the phone shut itself off. For me, it took the battery down to 1%. Then fully charge with the power off. No bump charge. That should be all you need.