After some struggle with ****ty video players on android, somehow I managed to open those MOV files.
Now I can see some differences between gen1 and gen2 prototype. Yes, keyboard sits a little bit lower than before, and that's a good thing. Also, I can see you changed the way plate supports feet by adding corner pillars of aluminium inside, and that's a good thing too.
However, I can also see that side panels of the case are significantly thinner than before. Is there any specific reason for this? Maybe cost saving? I don't know.
Also, if you make brass slab as an option, I think I'll take that too. But there is a catch when it comes to brass. Brass is a copper alloy and copper likes to react with oxygen. This is not corrosion, but it is oxidation of some sort, and creates brown patina. If you want to do brass slab properly, you have to do PVD coating (anodizing brass is not possible). PVD is expensive, it's probably the most expensive method of coating, but it is what it is.