My reasoning is simply based on what has happened before. Marvel and DC are infamous for reverting to original numbering. Also, a clean reboot is fine for a gimmick (to say we have all number ones) but the legacy of Action, Detective, Batman, Superman and such is just too strong. I bet money that, within two years we will see the original numbering return. An unrelated question, do you think one should be familiar with War of the Lanterns in order to start reading the new GL? In order to understand War, do you need to know Blackest Night and Brightest Day?