[3.20] Lightning Trap Saboteur | League Starter | Endgame Bosser | 4+mil dps on a 5link.

Farrul's fur does give permanent charges (provided you extend their duration long enough) and free aspect of the cat. Considering we'd have to use the charge duration mastery either way, and its SUPER easy to generate the charges, and they last 20 seconds, there is no difficulty sustaining the charges (again, provided you have the charge duration mastery). The only real bonus farrul's fur would give us is free aspect of the cat. The most notable parts of aspect of the cat are 100% crit chance, and 15% damage avoidance, alternating every 6 seconds. Sacrificing tinkerskin for those, while having to craft aspect of the cat onto one of our items taking a valuable suffix, is not really worth it for this build.

Lioneye's vision supports gems with lvl 15 pierce support (14% more damage, and pierces 3 enemies), which also frees up the helmet enchantment. The problem with this body armour is it has no energy shield, and is a pure dexterity base meaning getting 4 blue gems can be relatively difficult.

Kintsugi is great for evasion based builds, reducing damage taken by 35% if you havent been hit recently, but is a pure dex base and has no modifiers to damage or life or energy shield, and again doesn't give any recovery like tinkerskin.

Belly of the beast gives more life than any other chest (ignoring kaom's heart which has no sockets), and a decent amount of evasion rating. Being a hybrid str/dex base its even harder to get blue sockets than on the lioneye's or kintsugi, and the chest doesn't give any damage.

Doryani's Prototype would be the highest theoretical dps chest possible, however would require significant investment into armour which is literally the farthest part of the tree from us. The downsides of this chest are too much to make up for in a build that needs so many things near shadow, and has no access to armour scaling in the tree.

Inpulsa's gives us explode on killing a shocked enemy (we'd need shock proliferation of some kind), but provided you have 3 pierce, this builds doesn't really need any help with clear.

The restless ward gives increased charge duration, and 4% movement speed per frenzy charge (~40% movement speed depending on investment). This would open up the charge mastery to take 3% increased damage per charge (roughly 69% increased damage, at 10 max power charges and 3 endurance charges) The chest has a fair bit more energy shield than tinkerskin, and wouldn't at all be difficult to color. I have seen people use this chest with charge stacking traps, though I personally dont recommend it. The replica version gives 6% movement speed instead of 4% but doesn't have any charge duration.

Last but not least, skin of the lords gives +2 to socketed gems, and a random keystone. The +2 socketed gems is a decent amount of damage, and the 100% global defences can make up for the energy shield and evasion we would lose from tinkerskin. The problem is you'd have to find one with the right colors (It CANNOT be recolored), and with a keystone that at the very least, doesnt come with a massive downside (such as Chaos Innoculation, which lowers our health to 1) This body armour comes corrupted however, so its impossible to get more than just the +2 socketed.

We can get a Shaper's/Warlord's prefix modifier that gives +1 level to socketed active skill gems. This isn't even as good as +1 socketed gem corruption which applies to support gems as well, or the +2 proj/trap gem corruptions.

Shaper's/Hunter's suffix critical strike chance for spells is certainly nice and is considered one of the highest dps modifiers available to body armours, however its not that hard to cap crit chance without the modifier, so the damage it grants is less significant than for a build that doesn't stack power charges.

Power/Frenzy charge on hit modifiers are irrelevant, as we have no difficulty generating charges.

Hunter's +1 curse prefix is significant, however we can invest 3-4 passives to pick up Whisper's of doom, so this modifier alone isn't enough to warrant dropping tinkerskin. Even if you are using a third curse you'd have to figure out a way to apply it without sacrificing exposure.