In Star Trek we saw boffs going on away missions and other activities all the time. One idea would be to allow boffs to go on doff missions. While on the mission, they would be unavailable for use in boff slots, and unable to be modified in any way. In exchange, boffs would provide a bonus to mission success and critical success beyond that of purple doffs. There could either be a flat bonus for all boffs, or it could be calculated using boff rank and rarity. Some boff traits can already be converted to doff traits, while other racial-based traits (Founders of the Federation, et. al.) can be added based on race.