Blizzard’s intent seems to be to break wizards dependency on deathwish and etched sigil; and while we may not know the full scope of their plan regarding it, the issue is that the method they’ve chosen to do so has caused far more problems than it’s solved ( in short we lost more builds than we’ve gained with this patch thus far).
Ideally they should’ve done something akin to:
Something I think that’s worth repeating (as it has been mentioned by numerous other folks already) is that while channeling builds were predominant for wizards, our channeling skills themselves were quite weak. As such this upcoming patch is just going to further weaken an already weak build (after all, channeling skills lose the dmg boost given by etched sigil).