Raids at least so far are not part of Sagas.
If this change is going to go through for obtaining TR hearts then it may be a good idea to also have the commendations of valor also drop in chests in raids. In my opinion both heroic and epic raids. Just have the count scale accordingly making epic the more attractive version to run.
Make them be affected by ransack. That would limit Tempest spamming as it can be reset instantaneously.
That would increase the opportunity for the playerbase to obtain them and give more incentive to raid in general.
IMO, increase the commendations dropping out of Sagas and add commendations dropping in raid chests.
This can be used to incentivize running raids as there will be a reward that all players can use.
This may be a good way to generate a Renaissance for raids as it gives something for everyone. Logic behind dropping them in every chest is that it will still soften the blow of a wipe because some progress was made towards the end goal.