You're already doing it for lots of other aspirational gear. Charge us an exotic cipher and whatever else you'd like to make it expensive, but it would be nice to at least have the option to get a high stat roll. Exotic cipher seems to be a currency of little value for players who are up to date with their exotics. The only reason I can see to not have this option is that it would disencourage players from running lost sectors, but RNG is sometimes doing that by itself (Seriously, 2 drops from 20+ runs??). I was one of the many players who made the mistake of getting Ikora's roll for their exotics and are now at the mercy of RNG to get an actual usable roll.