It's a bit silly when the whole party looks like they could kick any mighty creature's ass while scoundrels look like they might be a match for a petty bandit on a good day.
Well, as a rogue/scoundrel player myself, I have to say that that's what you are yourself, so don't expect to look any different. Even if it isn't, it may just be a clever diguise to give your enemies a false sense of security...
Just kidding. I'm playing Sebille (the elf origin) as my rogue, and I have to say that by around level 12+, her gear started to look pretty epic. (Human) Ifan, who is also specced mainly into FIN, looks pretty much the same as always, just with a few more mail bits instead of the leather he had earlier, so I tend to agree with your observation. I have to admit though that my perception is a bit selective. I care a lot more more about the look of Sebille's armor than Ifan's
