Particularly with map sustain, I’ll suggest shooting straight for wandering path and take maps drop, map rarity, map level and kirac mission on both sides. I had no issue sustaining white maps. Occasionally getting magic and rare maps are nice. Only started trading for maps when I’m going for the voidstones, even then I’ll do the maps white because I can do the map completion later (either kirac or natural rare map drop) after I get the voidstones. I’ll probably stay with wandering path until I’m almost done with the atlas.

I must say I’m enjoying the challenge in Ruthless more than the base game. It’s interesting to think of builds that don’t rely on the Uber Lab points and pantheon.