Ciders take time to mature to their best flavors, and if you just racked to secondary, it's got a long way to go. Give it some time, LOTS of time. Taste it again in a few months (3 and 6 months), then try sweetening it if you still want to.
just my opinion, of course 
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Primary
nothing
Secondary
Date Mead, Oatmeal Cookie Braggot, Fox in Sox Gruit
Aging
Hard lemonade, Cyser, Golden Plum Mead
Ginger-Orange Mead,
Agave Mead, Chocolate/Cinnamon Mead, Heather mead,
Bottled/Drinking
Heather Ale, Emerald Honey Kolsch, Hobgoblin clone, Terror of the Ewes Oatmeal Stout,
Kilt liftin' Wee Heavy, Soggy Doggy English Brown Ale, Saaz/Perle Mead, Cinnamon Mead, Shiraz,
Sauvignon Blanc, white merlot, Elderberry Mead, Vanilla Mead
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