Some times ago, we started developing a A220-300 for x-plane. A part of our team is motivated to bring it to MSFS. The project is opensource and freeware and was started on the initiative of the ArtfulPlonker.
We want to build an aircraft as close to the reality as possible, helped by some RL pilots. But the task is hard! We are taking our time to deliver a quality aircraft. At this stage, we are mostly done with the modelling. We are starting the systems/texturing.
If you want to follow the project, or participate (we need motivated people for the textures and programmers!), just join us on discord.