Warlock works ok there, and can swing Empower SLA on EB? However, pales in a Recharge Magic world.
Constructor is nice, with a recharge PP system, its reasonable to have a constant pet.
Divine Mind, well E6 PrC doesn't make bad base classes good, it can only sometimes make bad PrCs good.
PsyRef is still not on a any class list as a 3rd level power AFAIK, so no good.
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The next thing I'm considering is, beyond a typical LotR example, what does an E6/PrC/Recharge/Tippyverse metropolis look like.
Considering a Sharn/Waterdeep equivalent
Pop: 200,000
1% 6th level NPCs PC Classes: 2000
99% 1st level NPC/commoners: 180,000
Create Food & Water Caster/Trap: Gets limited by Recharge Magic causing 24hr reset. At most CL6 20 fed/24hr/caster or device
Create Water: CL6 12 gallons / 30 minutes, 576 gallons / day, per caster or device
1st level npc wealth: 900
6th level npc wealth: 5600
Not enough casters or wealth to provide near limitless Trap food, but perhaps provide a reasonable amount of Trap water. Food scarcity still exists, upholding common power structures, farming land, etc.