Other than the transcoding hassle, the #1 issue I had with the NX-1 is the fact that once you hit RECORD only the EVF *or* LCD is active. You cannot toggle between them like the Sony a7x series. This drove me nuts.
Its a simple video, well graded, well shot, captures the essence of the place, so I dont see anything wrong with it. Kinda makes me wanna go to Cuba and give it a shot ! I've been to Venezuela, which has a similar "vibe", but back then I didnt film :/
Heres some before and after, so you can understand how i've been exposing. These were with the grade on top, without further tweak, ill reduce the yellow/orange sat. and correct the color balance. On both, I pulled either the exposure or the shadows up a bit. (this ballroom reminded me of titanic !) As you can see, they're just slightly underexposed to avoid the clipping.