Congratulations I see you are continuing with your efforts to totally invalidate all older named items.
I havent been impressed with the loot update, if it were up to me I'd rollback. Overpowered random lootgen, and now here we have even more OP named. What will you bring out in U32? items even better than these?
Go read the Dungeon Masters Guide, I believe it contains details on how to create magical items. Code this into DDO, tweek as appropriate. Use this system for both named items which you create as static items and random gen items.
It really shouldn't be hard to create items, I certainly never had any problem when I was a DM but then I'm afraid I subscribe to the RTFM school of thought.