The people who don't like robes also have dozens of glamours to choose from. Yes, even the mages.
I highly suspect the OP is trolling (because if not, they are exaggerating horribly, and very poor at "requesting something from the devs" in a way that will make them listen), but the sentiment seems to come up often enough, and it seems to be the same kind of complaint every time: there's "nothing but robes", they all look the same and the devs should stop making them because people don't want them.
That simply isn't the case.
Yes, there are a lot of robes and long coats - especially for mages. But there are a reasonable amount of shorter tunics and shirts that seem to get overlooked in this sort of argument (not to mention Shisui swimwear as genuine leveling gear), plus "all classes" glamour gear that can be incorporated into job-themed costumes.
Also the claim (not just here) that robes all look the same. I don't understand this at all. They are clearly different designs, different lengths, different shapes. The game has a huge variety of robes - even before some people define anything longer than waist-length as a robe.
This is a fantasy game, and personally the robes and tunics are exactly what I want for costumes in this setting. (The near-invariable miniskirts for female mages' relic gear, on the other hand... don't get me started on that.)
Why the assumption that nobody likes this costume style just because you don't?
Old seasonal gear is cheap though, and the Legacy Warrior gear is definitely worth getting for $5.
I used the body armour and circlet for this WHM glamour and it also made a nice starter outfit for DRK (dyed shadow blue) that lasted quite a while until I was high-leveled enough to find something else I liked. My only complaint is that the sleeves should be a little longer so they connect to long gloves and gauntlets.
Also comes with useful gloves and boots that don't really have anything similar in-game.
There's also (for all classes, but not necessarily Lv1) the "Proto Ultima Mesh" from the Idyllshire quest that sends you into Dun Scaith, the gauntlets and boots from the Garlean armour set, and the Rathalos gear.
Guess what people actually wear in Arabian settings? (Hint: not the full body armour, as far as I'm aware, but....)
Long robes, especially in lighter fabrics, are going to protect you from the sun. A lot of desert-dwelling people in the real world wear them.