I voted "No, nada, never," although "probably not" would be more accurate. I'd love to have an Oasis, but the price is much too high for my e-reader budget.
It looks like it'd be very comfortable to hold, which my old hands would
really appreciate. I don't mind the asymmetrical design; function is more important than form to me. If the extra lights do result in more even screen illumination as touted, that's definitely a plus.
I have no use for the battery cover. I'd consider buying the device
sans cover for $150 or so, but that's not going to happen. So, for the foreseeable future, I'll continue to enjoy my Paperwhite 3.