The generation of rivers and oceans beds seems to be broken, because there are many small spots of sand, clay, gravel and dirt, and the majority of the beds being big holes or gravel in deeper y.

Too, the generation of beaches being the transition between ocean and continent seems to be broken to, because it is rare to see a beach, its rarer to see a beach that is not steep and even rarer to see a beach that extends to a long quantity of block. So, there is basically a steep terrain at the end of the continent or island.