For me, besides the ability to interact with the environment; NPCs, climbing and moving through terrain, influence upon combat, acquirable equipment and weapons, movement between sections of planets and the planets themselves. The most prevalent point of interest would be the character customizations. For example interactions with different weapons, movement and jumping capabilities, damage modifiers, appearance, how players earn their improvements, etc. It would be a great idea for members of the community to throw around some of their ideas for how Bungie could possibly tweak their plans and ideas for player customization. First off, how do players earn the opportunity to improve their player's characteristics, and what options are users presented with once they have achieved the required milestones. Will we have the option to radically change our characters, or will there be a set forth design for each class. Skill trees have worked out well in some games, such as Deus Ex and Borderlands. Also an improvement system primarily based upon how the player chooses to play the game, Elder Scrolls, works out quite well also. Or will it be so that the moment you choose your character, it has the greatest effect on gameplay through the entire game? I would like to see the type of upgrades that are reflected by how the player goes about the gameplay. A sniper cannot improve his sniping abilities without actually doing some sniping. I could talk all day about this, anybody else?