As the title says. I've jokingly suggested it when running SP fissures or Arbis with my clan members and yet it genuinely seems like it would be fun, and also very rewarding.
Imagine the combination of Vosfor, Steel Essence, Vitus Essence, and Endo you could get from Arbi and SP rewards combined. It would become an incredible farming mission while also combining two enjoyable (imo) gamemodes.
Now, I'm not sure if DE would be comfortable allowing that much to all be farmed in the same mission, but at the same time these farms are already ridiculous on their own, the only challenge is choosing which to run at any given time.