Other weapons need to have unleashed skills. Hammer is fun but I don't want to be tied down to that weapon, especially since this spec seems to favor melee range pets. Untamed as it is now feels like there's going to be one "correct" build if you want to be successful with the spec, which is unfortunate because build diversity is one of the main draws of GW2 and certainly the reason I play it over other MMOs!
On that note, there doesn't really seem to be much of a reason to use the cantrips over other, similar things the core Ranger already does. The 6-10s are not unique enough to warrant being part of an elite spec.