I am sure all of the points listed above are applicable for comic book readers that collect comics but not so much for comic collectors that are motivated by the films and don’t actually read the comics. If like me you watch the films then they don’t differentiate between old school and new school as they morph them both together, take X Men 1 the movie it includes Magneto and Prof X, Jean Gray from XMen 1, Wolverine and Storm from GSX1 (Wolverine 3rd Appearance GSX1). XMen First Class includes Magneto, Prof x plus many others mixed with Sebastian Shaw and Emma Frost who do not appear until XMen 129 so there is no old school and new school in the movies, so collectors motivated by the films will want both XMen 1 and GSX1.