No, disagree, because if the argument presented is "Bring out Wrath as it was", then Dungeon finder being in from the start is an obvious deviation from it.
If you want Dungeon finder in from the start, then at least be upfront about it and say it, because citing the "authenticity" of Wrath as an argument is self defeating as most of those people would not be pleased with a 100% authentic Wrath release in that regard.