I highly doubt it as they can make more $ by selling an extra seat to passengers of extra size and it does not seem like it would be worth it to buy these seats, even in the long run. Its not a bad idea if the cabin was wider to make a couple of whole rows of wide Economy seats. Its too bad they did not make the middle seat a little more desirable

So now instead of E+ being blocked from silvers, it will be E+ and E Wide being blocked from silvers.

The seatmap would probably look like this...