For me, the Bionic is set to be a pretty substantial upgrade regardless of what these specs end up being. Obviously I'll be a little let down if it ends up shipping with 2.2.2 rather than 2.3, but aside from that, I have very few qualms or worries. I'm coming from the original, unrooted Droid, so this is going to be a huge change. My Droid is about fourteen months old now and it's starting to show the signs of its age.
Bootloaders mean nothing to me. I have a general understanding of Android (at least more than the Verizon reps I deal with seem to anyway) and I follow the phones that Verizon puts out but I have no interest in customization to the point of rooting.
The only other thing that I'm keeping a close eye on is the pentile screen business. I've yet to see a working Droid X2 or Droid 3, just the dummy models, so I have nothing to compare to. I don't like what I've heard, but at the same time, it seems like a lot of the complaints are drastically blown out of proportion. I'll have to get around to getting into a Verizon store soon, I just hate the fact that they corner me and try to tell me the Bionic doesn't exist or isn't coming down the pipeline for many months. The only one that didn't was at a Best Buy out of town, but they hardly had any working models.
And truthfully, one of the biggest plusses of the Bionic may never affect me, but that remains to be seen. My area doesn't have 4G yet, and isn't even on Verizon's radar according to their site. However, US Cellular is Verizon's number one competitor in my area (T-Mobile is on a rapid decline and AT&T has almost no coverage here), and they've made it clear that they want 4G in this area by November, early 2012 at the latest. I can imagine that if that's the case, we're going to be quickly bumped into Verizon's sights before too long.