Deathwing
<Bronze Donator>
Well, ok, for weapons and jewelry, sure. Bloodshards are probably better for finding ancients in other slots.Not sure how bounties aren't needed when ancients are more needed than ever and rerolling is the only practical way to get one. I've made ancient Yang's and Unstable Scepter, still need at bare minimum a Twisted Sword and a Wand of Woh. 13 fails on the sword so far, and 3 fails on the wand, so there's not an end even remotely in sight.
Every build I've played except invoker thorns feels extremely weak without an ancient weapon. That's not even considering the absurd need for ancients on LoN builds, but fortunately those all look boring as shit just like bombardment.
As for being required, idk. This guy cleared a GR68 in decent time with a regular Golden Flense:
Diablo 3 Crusader Sweep Attack Lightning Build GR 68+ (Patch 2.4) - YouTube
I'm not debating that an ancient weapon is a large power boost(it is). But if you're just looking to complete the season journey, you might not need to reroll tons of weapons via the cube. You might not need one at all or it will just drop as your farming bloodshards for other slots.