The timelines seem to be by world, (Wonderland, Neverland, Our World, etc.) and Arendelle and Agrabah are both in the same world as the EF (Arendelle across a short sea, Agrabah across a vast desert). And since the Wiki recently decided to name this world the Fairy Tale World, shouldn't all three be merged into a Fairy Tale World Timeline?
Fairy Tale Land is the umbrella page for all the "realms" of that world, and so far it does not have a timeline, just a description of the "realms". So no, the current Enchanted Forest timeline is fine the way it is because it focuses specifically on "Misthaven".