This isn't a change most users would notice, but... well, those of us who dive through the xml sure would. At least the fix wouldn't take long, and it would be timely to get it done before modding support is expanded in 1.2.

Here's a partial list of some things I've noticed:
1. All hull technologies are in the /Logistics branch--except for Advanced Hulls, which is in /Industry for some reason.
2. Discovery Spheres have Category "Medical," instead of Research
3. There is a Dynamic Shielding technology (ok), a Dynamic Shields component (ok), and a Dynamic Shielding component (not used at all, requires the nonexistant tech Barriers IV)
4. MediumHull2 has a base sensor range of 2 (other medium hulls have sensor range 3)
5. There are some things that are so small that it seems silly to mention them, like the internal names for the sensor techs (Sensors=StarScanner, Sensors Mk 2=Starscanner2, Sensors Mk3=Sensor2 [sic]) that don't really fit.
6. There are a few planetary improvements that didn't make it into the game and, well, probably shouldn't be in the files either: Life Force Power (wtf?), Historical Preserve, Pain Amplifiers, Propaganda Machine, Nano Recorders (which, incidentally, require "Sensors2" instead of the correct "Sensor2", which is actually Sensors III...), and some I'm not sure about (Artificial Slave Center? Never heard of it, but I've never researched Concepts of Malice, the required tech, either).
7. Is the /Improvement/Employment field used at all?
8. What's the StarshipQualityBonus field of planetary improvements used for? No improvement has a nonzero value for this field...
9. Evil weapons are "Psyonic" while their corresponding techs are "Psionic" ...and that's all that jump out at me right now.