I think they go for distinct silhouettes to be able to distinguish between the character class’s at a quick glance. Giving Warlocks hooded armor (I think it would be cool tho) would muddy that a bit.
I personally would like more Monk looking robes for my Warlock :)
Maybe the classes should have options for their armor sets. Right now each of the classes has a set look to them to easily tell them apart, but I am an Iron Lord and I want a red cape with a fur hood on my titan.
I want Warlocks to look like demons.
I Want Hunters to look like a badass Cyberpunk Archer.
I want Titans to look like a beefed up Gundam with those neon wings.
We need more tunic-style outfits, or just shorter robes. The long dresses are getting old. Who actually runs around and fights in a full length robe anyway?
Hunters get cloaks/hoods and inordinately large thighs.
Titans get big shoulder armor and butt towels.
Warlocks get dresses.
They all have their definitive appearance items. I always thought that Warlocks could have done with a different look than dresses, but it wasn't my call. The look works for characters like Ikora, but not for all Warlocks. The long coat look would be fine, but none of the warlock gear looks like a long coat. It looks more like a dress.
And while Titan armor should be big and bold, I think a lot of the shoulder pad/armor got a bit out of hand in the "huge and ridiculous" dept. LOL