There is no problem with selling PREs until it doesnt give vertical power, that is: unlike Bladeforged - BF makes almost all other melee alternatives gimped in comparison.
Solution: Add PREs that do not power creep, add to diversity and flavour.
Noone really wins when you are forced/locked into specific Race/Class/PrE combinations, not even the casual players, the constant suggestion will increase to go ungimped on whatever "flavor" chars we are playing.
DDO could use a competent director/manager who can make money without adding power to the store.