Re: Features: Connected and Single time completed features
Short answer: Yes, and yes.
1: The fine structure within the mountain areas is purely aesthetical. Think of mountain ranges rather than individual peaks when we talk about mountains. BTW, if two adjacent borders of a tile show the same terrain, they are always connected. This is not southern France where sometimes walls touch in corners (and roads split meadows in two)
2: The water is enclosed by areas of different terrain, therefor it is indeed a completed lake, and scores as suggested.