while you were gone, many addons (VisualHeal, Grid, PitBull, sRaidFrames, PerfectRaid, BunchOfBars,...) switched to LibHealComm-3.0, which does not use RosterLib. While Grid does currently not display how much time is left on your Renews, it should be possible to add that functionality to a module. We'd just have to find someone to do so ;)
Good to hear =).
It isn't the amount of time left on the Renew that I was referring to, by the way. It was the square - with the HoT amount (like ) - on the raid frame that was nice. So for 15 seconds this square would be on the raid frame for each person I had put a Renew on.