Will there be a 727 and a350 ans qill the doors on the new planes open
Welcome to the community!
The developers currently have other priorities at the moment such as global flight. Aircraft such as the A350 and 737 will come with time. This applies to functions such as door opening as well.
I highly recommend you have a read through the forum rules and guidelines and familiarize yourself with the rules here. :)
If you have any more questions, do not hesitate to let us know.