So, we had a bit of an issue in our game with infra/dark/?vision. We had a hobbit and 2 elves. I said the halfling had none but the elves could see in the dark (as per Moldvay) – my halfling player was unhappy. But this points out to me that it is a missing element from the game since the racial traits don’t list any of this. OK, the rule may be to ask questions of the players and find out how your world works but I still think that some prompts in the rules would be good eg I like DCC’s phrasing of “heightened senses”. I personally think this is more important than being light of step and balance – which interacts in a weird way with DEX saving throws. (My halfling thief is getting a bit of an inferiority complex about the elves).