I think that before the staff puts planes in that never really flew (like the Do 728), they should go for less known planes that had actually flew, at least in the prototype stage, like the Antonov AN-10 (It flew from 1957 to 1972 (carried 100 pax, able to fly 2500 mi at about 360kts, all this according to wiki.)), MD-220 and PZL MD-12 (not to be mistaken with MDD's MD-12).