A least Universal gave them the option of waiting in line for it. They could have just opened up DA for a few weeks (or months) without Gringotts. Some people may not make it back to Orlando for a few a years and they got to ride it (painfully so, but if they really wanted to at least they had the opportunity). Disney did not give their customers the same option with 7DMT. So again I applaud Universals approach much more than Disneys. If I had been down there I would prefer to have the option to wait for Gringotts, not that I would have