Now that I think about it, a game of this scale woudn't work well for mobile, you'll have to compromise a lot of possible features that could work on the PC version for it, and the controls would be tricky to develop, if the mobile version will just be a side thing that is simplified compared to the PC version then sure, but you shoudn't make it your top priority, and you should definitely NOT scrap features to make both mobile and PC versions the same, think about Minecraft for instance, the Pocket Edition is what the name suggests, a simplified version of the game for mobile with less features so that it can run on the phone, if you want the full experience then you have to play it on PC.