With many missing liveries on the E-jets and the needed cockpit remodel, I think the Embraer jets should be reworked.
Embraer is A Brazilian aerospace company which manufactures civilian and military aircraft as well as the famous legacy series
Probably the best aircraft Embraer has ever developed with over 1000+ units in service with regional airlines e.g. United Express, Lufthansa regional and BA Cityflyer
And mainline fleets e.g. Air Canada, Kenya Airways and Azul.
Feel free to comment and vote if interested