I believe there should be large sections of Land in the game. It should be very far out though from the beginning (so a late game part). Land has a variety of different biomes in different far out directions. From subzero you had the frosty section, that could be at a pole, a desert section, a tropical section or whatever. The underwater mechanics are amazing, it would be such an amazing game if there was also a large land based contingent. Also youve got to meet atleast one alien somehow in the game. Maybe hes in some cryochamber and you wake him up and speak to him.