I like the idea because it is only fair for the top team to be able to play who they think is their best match-up; however, I don't think this it is really an issue at the top.
While the 1 seed may prefer the 6 or 7 seed in the first round, they more prefer having home court advantage through the ECF. The top teams should absolutely win their first round match-up, regardless (if they don't, then they weren't likely to go far anyway). After that, home court is extremely important.