I was thinking while fighting off a food coma and had this idea.
What if the the 2 alpha slot abilities that gave 20% defense buff effects also gave DDR? It would be of now use to SR or any set that does not have DDR built in, but for hybrid sets like shield or invulnerability it would be good. They could have it give a 20% bonus to existing DDR so sets with 50 - 60% DDR would gain 10 - 12% extra DDR. They could also just give a flat bonus of 10%. It would not be of use to SR and I doubt 10% DDR would be of much help to sets without built in DDR.
They could also introduce an IO set (10-50) with a unique IO that gave a flat bonus to DDR. If it was a 10% bonus, again it would not be of much use if you did not have other sources of DDR, but even SR could use it at low levels and exemplared to low level when they do not have all the powers available that grant them DDR.
Now if they did both, there may be some concern about taking sets with 50-60% DDR and bumping them up to 70-80% DDR being balanced. I am not sure what 20% DDR would do for an AT like blaster if they were able to take both, though if the alpha slot gave a % bonus and the IO a flat bonus, then non DDR sets would only gain 12% DDR while sets with 50-60% DDR would gain 12-14% extra DDR if they had the IO and the alpha slot.
It might turn out useless to somewhat of use to most ATs and slightly OP for the hybrid sets.
What do you guys think?