Thicker cases.
The Terra Luna has one nice thing, the case back, final point. The rest, IMO, is, well...
My favourite? The 1815. 38, 5 mm is a perfect size for this Watch. And it is a Watch, as you perfectly wrote, which still has some Lange DNA.
I am still waiting to be delighted, which is not the case anymore, since the unveil of the RL PLM.
Best,
Nicolas