I think keeping the total number of slots relatively low, can make each individual slot feel better and more impactful.
As much as I would love to have Leg Armour and Pauldrons for example, I think it will not do much for actually making loot more exciting, quite the contrary, making loot less imapctful, because everything needs to be rebalnced (and made weaker).
Maybe we will get more slots for cosmetics in the future, who knows.
The body armor is named that way as it is intended to be the whole suit of armor. At least we have belts that hold pants up instead of pants with no belts.
From a purely optimization point of view, having more item slots means harder to optimize your items, less item slots means easier to optimize your items. So, I’m happy to slay monsters pantless.
Also OP, what kind of pants were you thinking of? Boxers, briefs, y fronts? Personally I’d think trousers would be a more appropriate form of armour than pants.
We need two more slots, bottom-half underwear & top-half underwear with the option to wear a mankini (like a 2h weapon) with appropriate 2h-scaled stats. Then we need something to make the character’s gear invisible so we can run round Eterra like a demonic Borat slaying mobs in a mankini. I won’t post an image, but you can google “Borat mankini” if you wish. Just make sure to have bucket nearby.
IMO, the Primalist would look, er, extra special, in a mankini. What do you think @EHG_Mike?