Two things: first, we don't KNOW what stores/restaurants are coming in as of this morning. I think it's unfair to judge the lineup before we have a definitive tenant list. Sure, it's fun to pile on CF, but there's zero indication CF will be a part of Disney Springs.
Second, I don't go to WDW to ride Dumbo, but it's still very, very popular. A lot of people DO come to WDW with a visit to the mall on their agenda. Premium Outlets is or recently was like the #4 attraction in Florida. Millenia and Florida Mall are swamped with (often international) tourists by the busload. If TDO is going for a "trap them on property" approach, this is a logical step. You need to mention Orlando malls in the same breath as Harry Potter when you discuss the competition.