In real Life a lot of big airlines don’t have a first class, but do have a so called economy comfort zone (or whatever name They gave it). This is a economy plus with more pitch and legroom or better seats and often more choices in food and/or entertainment.
In Airlinesim we off course adjust chairs and service, but we have no option for ticketing an economy comfort/plus zone. Is it possible to add that feature?
Well you do have three different classes to choose. I don´t think it doesn´t matter if you call them eceonomy, economy plus, business class or first class. And you are are able to choose what service you want to offer in the different classes, I don´t see the need to change something there. There are other things whch need to be checked with more priority…
For several reasons, the three classes we have (four, if you include cargo) are hard-coded into the game. As such, adding an additional class is almost impossible. Beyond that, it’s more or less a branding trick in reality anyhow. So nope, no additional class anytime soon.