This is inaccurate. The deep dive is incomplete and not comprehensive. To provide more complete information and reduce misperceptions, Blizzard has repeatedly stated other changes are possible if the players want them. Moreover, the designers themselves would love to make changes. They have made multiple direct statements that additional changes including to balance may be possible.
Blizzard has sent out two surveys on D2R where they sought balance changes in both. This is documented.
In addition to these management approved surveys, we have many Blizzard quotes.