Honestly, i'd just buy a GNex with my upgrade, but switch right back to my Bionic for my daily driver. The GNex would then have it's bootloader unlocked, and be my development fun device. I'd be much more apt to get back into Android development if my daily driver phone weren't my only device. Alas, my Bionic WAS my upgrade so this is merely a dream.
Maybe i'll win me a free keyboard app, though!