I think it is not very realistic to ask for more planes. What this flightsim lacks is the feeling of being there. So I hope IPACS will focus on things like moving traffic, v-speed callouts, cabin announcements, rumbling sound and vibrating panels during takeoff and touchdown and of course changing weather during time and contrails. Now it's boring once you reach cruise altitude. The good thing of AS4 is that it runs without stutters and the realistic landscapes when flying at altitude.
I agree in part with what you say
Regarding aircraft, to save time they could make variants of existing aircraft, such as the 777-200LR, 747-8, 787-8, ETC.
IT'S NOT THAT I'M ASKING FOR THOSE PLANES.
Mr. Jet-Pack (IPACS) He had said that it made it easier for them to develop new aircraft.
What you say about weather, vibration effects, etc etc, is very good.