At least for the foreseeable future, cycles (LE’s version of leagues/seasons) are expected to be more like mini-expansions to the game until they’ve added all of the features they feel are core to the overall experience. You can read more about what the dev’s have said about cycles here, which admittedly isn’t much as many of the details aren’t fully known or nailed down as of yet.
It’ll likely be some time after launch before seasonal mechanics are something we’ll need to worry about. But yes, I imagine LE will eventually suffer from similar issues and complaints from players over what becomes “core” or not.