>>717928470
Player gets Option to Destroy or Control the Reapers.
Destroy has a final persuade check: You'll convince the Reapers that they've misunderstood what "being alive" means, and that they've preserved nothing. You hit the switch and the big EMP wave ricochet across the galaxy, and you see the Reapers die in a visual way that almost implies the ghosts of every former civilization leave the Reaper "corpse".
Control, you get another persuade check, where you agree that the Reapers contain vast knowledge and tremendous power, and this could instead be used for a new purpose, not corrupted by an AI. A very renegade Shepard will seem to be even worse a director of the Reapers, and plans on enslaving Krogan to control their birthrates and take control over Synthetics as well, to prevent them from living alongside organics.
If you fail the "checks" the Crucible can't be used, and Shepard has to blow it up manually, where you can survive in High EMS like now, but the requirement is a bit lower if you succeeded. This however also kills Synthetic life including the Geth and EDI, as it severs all Reaper software it touches in an uncontrolled way consequence of playing loose with the narrative.
The Mass Relays are also torn apart from the velocity of the blast, leaving the future bittersweet.
I would genuinely fix i this way, to make the Catalyst reveal more about "The rest of the story" and be more generalized against all the things that threaten galactic peace, and then you also show that the Reapers have a corrupted power-complex thinking they're gods and retain the right to decide what's better for everybody, and their big misconception, as purely Synthetic un-united beings, is that they don't understand that "life" is more than the bodies you carry, but the "soul" that we showed Legion had earlier in the story, by way of becoming able to live alongside its creators.
Thus it's now about Organics vs Synthetics, but it's simultaneously about everything else.