To be honest, even though the IL-18 might've been a accident (introduced a bit early, eh?), it almost is like a small sized 737 or F-100. Only that it is slightly smaller and burns more fuel (though the fuel cost in 1955 would be not as hard biting as it would be in 2007 obviously, but it still is a very good plane). Also seems to have similar range to the base 735 I think. I have 40 of them in my fleet and just luv them

.
The other "classic" birds remind me of their turboprop powered counterparts from the future too and to be honest, other than the airlines based at the megaports, they made up a huge portion of the airlines, just like the M 4-0-4/CVs do here.