So - this is the problem we often run into with our gear optimizer. It doesn’t care what people expect to see - it just finds the setup that gives the highest output. Surprising results happen in some cases.
In this case, if you are completely running out of mana, you’ll actually do a little bit more damage if you increase your mana pool to the point that you can do another aimed shot or two. That actually beats out adding a little bit of damage to each attack.
My take away from this is that hunters should definitely be using mana consumables to maximize their DPS output. If you don’t want to use mana consumables, then you could consider this “weird” gear as an alternative.
You can also go into the item lists and exclude items that you don’t want to use, regardless. I could probably add a setting for hunters to exclude all gear that only has “caster” stats on it for convenience.
I’m fairly confident that you’d actually be able to do higher damage on average if you used the suggested gear with the setup you have specified. If you think about it… one extra aimed shot on a 140 second fight is going to be worth more than adding 2-3% damage to every attack. That’s why you are seeing a mix of agility gear and intellect gear. The optimizer is getting just enough mana to add another shot. In my opinion, that is what you would use an optimizer like this for: to find unexpected solutions.
Most BiS lists out there are based on the assumption that a hunter would use major mana potions, demonic runes, and brilliant mana oil. They usually assume you’d have a blessing of wisdom or shaman totem as well. Our optimizer lets you configure the consumables/buffs to whatever you will actually use - and then finds the appropriate gear.