While playing my paragon I noticed that it was difficult to determine if your chants/shouts/echoes were being maintained on your teammates. An indicator similar to the enchantment indicator (an UP arrow on the player health bar in the party window) would be a great help here.
This would be most useful for the Echo and/or chants like Mending Refrain that benefit the party, and with similar indicators like Aegis or other enchants, it would help the caster in the support role.
Sorry if this has already been suggested.
RH
Need a Paragon Chant/Shout/Echo indicator
rhuber