It's true, make raid loot that benefits a specific class the most, but also other classes to a lsr degree. Then make sure there is nothing else worthwhile in that raid so that everyone wants that one item, whether or not they get full benefits.....
But here's a thought, maybe all raids should have tokens instead of raid loot, you get a few tokens, trade em in for a raid item that you choose. Raid loot fights solved. You get what you want, nothing is ever up for roll, and if someone wants to pass a token to a guildy or mate, so be it.
While your at it over the next 6 months making this change ddo, could you also make all the tod rings only give the additional benefits to the associated pre's, even if its incremental to how many tiers of the pre you have. It hasn't happened to me but I would really like to see these barbs that think the benefits of a shintao ring outway wasting 2 slots...And yes it is 2 slots, a wisdom ring really doesn't help a barb much at all, and +1str dont stack with encrusted, then you waste a neck slot to get the set bonus. Oh yay, you crit for 8pts more damage, so you can boast about a 558crit instead of a 550, but wouldn't you think a triple guard item would up to more damage....especially since barbs are always the main tank cause they do the most dps....but i digress...