TLDR - good mapper, decent all arounder on a not insane budget (20-40 div?). Most content viable.

TLDRer: 20-35M DPS totem DPS depending on gem setup and proj distance, 17K max phys hit, 30K max ele hit without guard up. 100% suppress, ailment immune, lots of endo charges, etc...

Approximate final POB: https://pobb.in/PaHzmu8wwC2i

Videos

Regular Eater: https://www.youtube.com/watch?v=lSQd0mzVoEw - just a quick display of basic boss DPS.

T17 250 item quantity Challenge: https://www.youtube.com/watch?v=F7DqPr-LTUQ&t=339s - note that I die a few times here on the boss, mostly due to bad play. I had reduced defenses this map and it makes it hard to keep totems up when they get annihilated by the beams. It was 166% more monster life too, which is actually not as bad as some of the offensive mods, but does make things take longer. This character isn't a "you will crush T17s to the ground with your eyes closed" type character, but you should easily make it through any T17 that isn't Wildwooded all to hell without burning your portals, and it doesn't cost double corrupted mageblood + infinity div.

Average T17: https://www.youtube.com/watch?v=zyEW2tBLmeA&t=1s I run Citadel because it was cheap when I started buying T17s. I've done all of them I think, maybe missing Ziggurat. I do go back and clean these up after the boss is done, but don't want to extend videos out too long.

Build basics:

Offense: Ele hit of the spectrum provides some nice base damage. Currently it is mostly being played with bows, but it can also be used with wands. This is particularly nice for ballista totems, as it means we can either use Trolltimbre Spire for leech or we can use a +1 totems shield for more damage. I went Trolltimbre because I hate dying and Slayer Overleech is a nice addition. Damage is scaled through standard Ralakesh/maven belt bullshit in addition to more totems, more projectiles, and elemental ailment stacking. Piscator's Vigil makes for an extremely good weapon here, that is competitive with all but 50-100+ div wands. Gem-wise I swap between pierce and barrage support for mapping/bossing. There is really no need to swap unless its a T17 or above boss. You can easily kill anything else in 3-5s.

Base damage - gem levels, even though it is an attack - your weapon provides nothing.

Scaling - crit/ailments/totems.

Defense: Ralakesh is a big part of things again here as we end up with a mess of endurance charges through Slayer and Masterful form and frenzy charge stacking. We also have Brutal Fervour, 100% spell suppression, and ailment immunity in addition to totem style gameplay. https://www.youtube.com/watch?v=BZwuTo7zKM8 Finally, we use Lightning coil which gives a nice chunk of phys mitigation and alleviates some of the armour pressure on right side.

Problems: Big phys hits and the MFing exploding corpses in T17s are really your only big worry outside of Ubers. Just for the record, I haven't tried Ubers because I just don't love the content anymore. I could definitely have killed Uber Shaper and some of the other ones I am better at, but it would've required moving a few things around for stun immunity and I was ready to play something different. Some of the tougher phases would be hard on this guy i.e. Exarch ball phase. I was most of the way through a Sanctum before I bailed to make a sale. I am 95% sure this dude can complete Sanctums easily, although I wouldn't try no-hit with this character. I am a bit sketchier on Simulacrums due to the damage mitigation, but I would guess it would be decent although not great.

How do I get this gear: It's mostly uniques, so you buy it. I crafted literally nothing. The only thing I did was add catalysts and use tainted fusings to 6L my chest. Not SSF viable. Note that a lot of the corrupts and whatnot are quite strong, particularly with Piscky's Vigil so if you plan on doing it, don't skimp.

POB warrior bullshit: Anything that looks like POB warrior bullshit is probably based on something I saw or believe to be true. I.e. the scorch/sap/brittle values are based off average hit in calcs, but just from playing I picked the numbers selected as I saw them routinely. Enduring composure for endo charges. Flame golem ignites for me bypassing Interrogation.

Conclusions: I really liked this build. I swore I was going to do something other than play totems this league, so I have moved on, but might go back to it to finish off challenges or something if my current build doesn't work out.