One interesting question...
If Bears really stink up this year (with Trubisky sitting out the whole year in favor of Glennon), get #1 pick overall and are in position to draft Rosen/Darnold, then what do you think they should do...
a) trade Trubisky and get best QB from 2018 class (Rosen/Darnold)
b) cash in #1 pick, trade it for a haul to some QB starved team
c) just take the best positional player available (for example similar to what Browns did this year)
IMO, if some QB from 2018 class shows superior QB traits and Bears get that #1 overall pick, I'd rather trade Trubisky.