When you have epic toons you can easily solo Chronoscope on heroic, the set bonus when combined with feywild gear at lvl 5 is very nice and you can coast on that 'til lvl 10 or so, also the abashai gear ( rings necklaces and belts) are very good indeed, the +1 Ki neckie is the lowest level for such items. I know that's not level 1 but level 1 - 5 goes by pretty damn quick so...
Regarding Saltmarsh: i think it's fair to say that the greatest utility of heroic Sm is upgrading the gear to level 20, getting you a very soft start on the epics.