A few general answers to a few general questions on here:
- On the HTCDev site, there are instructions for re-locking the bootloader. Unlocking is reversible. If you have no immediate plans on returning the Rezound, go ahead and unlock it. Enjoy the freedom. As MrSmith said, if you need to return it and are worried about it being unlocked, just do it by phone. Usually they just receive it, turn it on, and factory reset it once they get their hands on it. No harm, no foul.
- No, you cannot undervolt it just yet. Because S-On is still there, we're unable to explore kernels (for now) because the partition where this is stored requires a security key (General explanation. Android vets, feel free to correct/go in-depth)
- I deleted all bloatware. No, I didn't back it up. Yes, my phone runs great (375 MB free RAM with Sense anyone?) If you prefer ICS via the future OTA update, you can backup the bloatware and simply re-install it in order to get the update. Your best bet for pure ICS is to wait for the ROMs that should come out in the next few weeks, now that we have this great honor of unlocked bootloader.