I would also welcome a new Embraer for FSX with today's standards because it's a very interesting aircraft in between Boeing's and Airbus' logic. However the Wilco/FeelThere E-Jets is a great addon that is still complex enough today to get into airline flying and FMC operation if you are willing to look over the outdated graphics. I don't know how detailed it is under the hood but when flying I feel it has been created with the same philosophy as Aerosoft's Airbus. It even has a similiar copilot function.
And a scenery request (or a question): does Iceland X work with FSX Steam? If not, do you plan to update it or release a new version for P3D?