Not that I particularly care to defend any company, but being on the other end of manufacturing and design, I thought I would point out a few things:
1. The photo angle (about 10 degrees off centre) and the shadow at the top exaggerates the amount the diaphragm is off. The diaphragm is off only by about 0.3mm. I've seen K47 diaphragms off that amount, and I have seen Chinese diaphragms off that amount. There is likely an acceptable tolerance and you must remember that this is a 1.2% error in the location of the gold - a very acceptable tolerance on this type of process. It is, however, likely on the edge of that tolerance. The same diaphragm error is harder to spot on a K67/87 capsule. The fewer number of holes in the K103 capsule makes it more obvious something isn't quite lined up.
When preparing tolerances, the importance of any parameter needs to be calculated. Having the gold off by even 0.5 mm or so is not likely to cause a significant shift of microphone performance, so its tolerance is set that wide. The backplate to diaphragm spacing is critical so the tolerance of that dimension is typically set to something like 3 microns or so. In manufacturing you need to do this otherwise the costs of building something go rapidly out of control. That being said, the visual aspect needs to be addressed as well, so sometimes you set a tolerance a bit tighter so things don't look wrong. This may be the case here. To me it does look a bit too much off-centre.
2. The SMT caps shown on the bottom side of the board are for the DC-DC converter to generate the 60 volt polarization voltage only. That is all they do. Ceramic is fine here. Actually, an SMT ceramic is preferable. They have less inductance than leaded caps, and that's what you need to avoid generating funny noises in these sort of circuits (charge pumps).
3. The TLM103 design has four capacitors of any significance in the signal path - the capsule coupling cap, the output cap, and two power supply filter caps. The coupling caps are through-hole - you can see them to the right of the photo. The other ceramics on top are small compensation caps that tame the gain of the amplifier in the MHz region - in the 47pF region. There may be some change in sound by changing these but I don't think it's unlikely. The capsule coupling cap is where I'd look at first, as well as the output cap.
4. You may be able to improve the sound slightly by changing the power supply output filter capacitors to something other than ceramics.
5. The backplate design of the TLM103 is unique and designed for the lack of a back diaphragm. It is not the same capsule as in a U87 or that sort of thing. In this case they cannot grade parts and use them in high or low end mics.