As the current rules (on main site, build ecosystem), the fisrt player to go has a very distict advantage because he is allowed to place the starting habitat. This is problematic for a variety of reasons, but most glaring is that if the opposing player has built his deck around a completely seperate ecosystem, there is no way for him to fairly compete. Player 1 plays an ocean, while player 2 has built is deck around plains and herd animals.
I propose something that I saw done with the old Star Wars CCG (Jesus am I that old? that thing came out 15 years ago.) at the start of the game, each player already begins the game with a habitat chosen. The two habitats do not have to connect, but a player can only play onto an opposing player's habitat if they are connected (challenges would be allowed at any time to any habitat). This way, it solves the initial problem of fairness, while also introducing a completely volentary level of complexity to the game. Do I isolate myself in an attempt to build a top heavy ecosystem, or do I connect to the oppoing player and attempt to overtake his?
I know copyright is a concern, but I doubt the idea of beginning with a single card has been taken.