No offense taken, s'cool.
I'm just choosing to take a stance out of principle rather than pure mechanical pragmatism. To get rather (very) hyperbolic, one could also argue that the smart choice would be to downright hand over the reins of DEI to Xanatos, becoming a subsidiary to Xanatos Enterprises, and mixing our combined resources into an ultra mega powerhouse guided by his superior intellect. Join the winning team and all that, since he's not a world ender and knows what he's doing. Enjoy the autopilot into success.
Doesn't mean any of us would choose to do it.
To add a bit more logic into the mix, even if it means reactivating my noggin for a bit, I don't believe the mechanical gain of a few assured intrigue points are really worth this big of a compromise, specially if we ended up rolling a 1. Narratively, it's also a disservice to Mirage. Strategically, even the smallest drop to Xanatos' infiltration means he will have to spend time and resources to get it back into place, which he will have to choose instead of another more productive activity, and if our mole sweep actually lowers it further then it could become an actual annoyance to rebuild.
Also, speaking entirely in-character, I don't see why we need to bend the knee this hard over the argument that it's a sacrifice to save the world. Toffee and Doris are threats but it don't look insurmountable to the point of us calling quits, and Doom may be scary but it's ultimately a rather down to earth conflict. Who's this Bill everyone keeps talking about? The Science guy from TV with the catchy song?
Also also, I somewhat feel like choosing the help means doing a 180 on the previous vote to become aware of Xanatos during the dream therapy. I mean, I guess it earned us the chance to get this deal and the extra intrigue, but if we were going to end up as Xanatos' piece anyway, I would have preferred Doof to remain blissfully unaware so the whole thing had a comedic undertone rather than a sad one soaked in defeat.
Edit: one more thing. Speaking of the last point, I can't help but be impressed by Xanatos effectively no selling the vote and having Doof as good as eating from his hand the instant the vote started having an effect. As easy as breathing it was. Still, it leaves a bad taste in my mouth.