Newly created X-Men vs using established characters

Why does every new X-Men writer feel the need to create a new class of X-Men… we never got to fully integrate and use the last 3 classes with only a few ever really elevating to the main team… why not utilize those characters instead of making dumber and dumber powers and characters? I’m probably alone in this and about to get downvoted to hell but I’d love to see more of those previous classes all mixed together for interesting couplings and power dynamics instead of being introduced to another wave of mutants who will be left on the shelves and forgotten whenever the inevitable reset comes.