Yes, that's a good point, reconsidering now. It's the burn in / high usage issue with the panel I think. I have checked with Croma, they have a demo unit for sale with almost similar offer. Checking on that as well.
Don't file a replacement for burn-in immediately. Use it for a month or so. See if you can wipe out the usage hours or get them to wipe out the usage hours too. Don't want LG to deny the claim. Outside LG has been replacing panels for burn-in till two years from purchase.