This conversation is highlighting the problem with the whole approach of class/archetype sets handpicked by the devs with exactly what that archetype wants. DDO just has too many viable ways to build a character for this kind of gear specialization. If you have a set specifically for light armored melee dps, then medium and heavy armor want one also, but some some want doublestrike while others cleave a lot so don't value it, some want tactics (but which one?) others only dps, some want SA and hide some don't, some want positive healing amp, some repair or even negative etc, etc, etc. Then the ranged DPS wants specific sets for their needs (in the armor type they want to use), and the mitigation tanks, and avoidance tanks, the tanky casters, and the pure DC casters, the enchantment bards, and the melee bards, etc, etc, etc, etc, etc, etc. How far does it go? We're already seeing the lobby for melee warforged healing amp builds. Can't leave them out. Do we need a set for the charisma based medium armored vistani fvs that uses mass command (enchantment) for CC?
3.5 D&D itemization worked in a highly customizable system because items weren't designed for hyper-specialized build/archetypes. A gauntlet of ogre strength +6 was desirable to a huge number of characters. It wasn't a barbarian item or a melee cleric item or monk item, but it would likely be valued by all. You get a few items that are arcane specific, or divine specific, or seem roguish, but for the most part items were generic and worked well for many characters. DDO used to feel the same way. Then at some point items started to feel more like they were designed specifically for certain builds/classes/archtypes. And inevitably when one build got a specific item people who played other builds feel left out and want "their item." And if they don't get it then "the devs hate [my build]."
I know this isn't specific actionable advice, and the approach of sharn gear isn't going to fundamentally going to change, it's just food for thought. For actionable advice I guess I agree with the posters saying there should be a light armored dc caster set. Once you've gone this far down the road of giving every popular build exactly what they want then why should they be left out? Good luck giving out interesting items in the packs after Sharn though when everyone already has their perfect set with everything they want.