Yeah, sadly I didn't have enough time to really flesh out everything I wanted to. The skill rolls are one example of that. You really only see how the skill rolling is done in mission, for instance in the sample play for the Information Recovery Mission Table: "Any crewmember that rolls less than 4 on Vitality uses 1 health." And another example from the ship damage table: "an Inventery roll of 3 will repair this damage."
Glad you enjoy it! I did get sleep, but that's also why I nearly missed the submission deadline :P