I want it to be able to handle death metal in C standard, but I also play stuff like post-metal that needs more touch sensitivity and dynamics than active pickups have (to my understanding, have never used actives though so lmk if I'm wrong). Most of the extreme metal I listen to is 90s stuff. Really don't care for djent or stuff that requires super modern and tight tones.
As far as my chain goes, for death metal stuff I play into This Heavy Earth Flesh Rot V2 (Ampeg VH140C preamp in pedal form), into a Lichtlaerm PandorA power amp pedal, into a KSR 212V with Alnico Cream and Redback. For non death metal stuff I use a Science Mother preamp pedal, and I boost either of my preamp pedals with a TS-style OD