meh, i dont think its a good idea, i am currently playing R0, and I personally like the long haul games, although, i dont think that there are a lot of player doing multiple of these long worlds, when this world is done, I dont think that i will start an other game in like 0.5-2 years.
But, i think that chaging R0 to 1945-2030 might be a good idea, realatively, the extra time is minimal ( 46 real weeks instead of 38). for me a shorter day doesnt look like a good idea, because in the lategame, it is becoming impossible to keep your fleet up to date + adding some routes + competing with other airlines.
the best solotion is to extend R1 to 2030 (instead of 2025), and start R0 in 1945(instead of 1950)