Any 4.1+ has Google now.
Leave your bootloader unlocked. No reason to lock it again, unless you are trying to return it to stock for a return or something. The Camera is not Sense, but the actual photo quality is closer than it appears at first. Often, the first impression is that it is fuzzy, when in fact it just has not applied any effects to the photo that Sense does by default. That, and the AOSP gallery zooms MUCH farther than HTC's gallery does. If you apply, via the options in the Gallery, about 50%+ light fill, and cool off the colors a bit, the photos are darned close to what Sense gives. The AOSP cam is much warmer by default... too much, if you have pale subjects with red plastic toys in the frame.
Pretty sure Sense also applies a sharpness effect too. If you zoom way in on photos from each, you can see that the Sense photos are not as sharp as they first appear.
That said, the 4.2 camera does not have all the features enabled (zero shutter lag, etc). If you did not flash the new 4.2 GAPPS and used the standard ICS ones in the CM thread, those features are there. But the camera app is even less cool, so there is a trade off. Sense cam does have the edge.