Currently DDO is suffering from an imbalance caused by unintended consequences of the Racial update.
Activity in the epics have dropped while the heroics are filled with fast tracking warlocks grinding for 30 heroic lives. ( to be fair I'm also seeing a fair amount of wizards and sorcerers. The key seems to be being able to kill many opponents very quickly. )
A dual racial / true heart would help solve that. The player would acquire a true reincarnation heart and a racial heart and then a "heart combiner". Then upon reincarnation they'd get a past life feat for the class and one for the race. ( Similar to how it works for Iconic )
1) Players would be encouraged to play a much larger variety of classes in heroics.
2) Players would spend more time in epics as they have to work to get two hearts and the combiner.
3) For less exuberant players having the reincarnation grind would seem less daunting.