Basically, it’s now difficult to envision any danger to the Eternals that couldn’t be overwhelmed by again utilizing the Uni-Mind to unite each individual power. That power dynamic has been seen previously, obviously, in light of the fact that it’s by and large what the Infinity Gauntlet idea depended on: the unification of influential individual units that together made something remarkable. Furthermore essentially, Sersi flaunting the upside of the Uni-Mind fills in as an unmistakable update that the Infinity Stones accompanied the issue of being excessively strong. Like the Uni-Mind, there are such countless expansive powers inside every one of the singular Infinity Stones that barely anything in their way could at any point be an issue. In the possession of either the Avengers or a miscreant, with practically no kind of cutoff (which Thanos’ optimism really offered them), they would address an over the top “get all arrangement” like the Uni-Mind. Without a cutoff, there can be no genuine stakes.
The brought together Infinity Stones commanding control over death, common inestimable power limits, supporting superpowers in people, permitting time travel and manipulation, evolving reality, and an entire range of other great stunts would be a lot in the long haul. Enemies as noteworthy as Galactus or Kang would be near suckers afterward, and no permanent answer for the Infinity Stones question would have been a misstep. That is the reason annihilating them in Avengers: Endgame was at last the ideal decision for the MCU. Essentially, separating the nominal saints for Eternals’ consummation was a savvy way to guarantee that they couldn’t just keep on utilizing their Uni-Mind (which didn’t need the contribution of the entirety of the group) against any danger to Earth or themselves.
As the MCU advances and Marvel Studios are enticed increasingly more by the presentation of new more remarkable characters with each new film and TV show, the issue of how to restrict their powers will always be appropriate. As of now, any semblance of Vision, Scarlet Witch, Captain Marvel, and Hulk have been fundamentally nerfed (either with smart story thinking or deliberately ignorant writing) to make everything fair, and that will keep on being an applicable concern, especially as Phase 4 presents a totally different Avengers group with the most amazing assortment of abilities yet, conceivably. Tossing relics or contraptions in with the general mish-mash like the Infinity Stones or the Uni-Mind makes that issue considerably really squeezing, and ideally, Eternals ends up being an illustration in how to keep away from that.
However Eternals neglected to answer any further Infinity Stones secrets, the Phase 4 film recommended why the MCU expected to annihilate the Stones later Avengers: Endgame. So, the Infinity Stones were always excessively strong and their utilizations so expansive in scope that permitting them to stay as key pieces of the MCU story would have presented such a large number of escape clauses and exceptional powers that would have made genuine show difficult to sell. That much is completely proposed by Eternals’ consummation, which sees Gemma Chan’s Sersi successfully going Super Sayan to bring down the Earth’s arising Celestial Tiamut.