I'm running with Lights Hammer which I fell in love with, after BF. In most fights you can predict when the aoe healing wil be needed, so you can drop it. I've never found the optimal time in ANY situation to use TD, it's almost 2s cast (1.7s) and it heals for ... nothing significant. On paper it does 500k healing over 10s and 99% of the time it's cast on me, sigh.
When tank gets chunked for 90%, I don't see myself having the time to do anything else but spam FOL, even martyr feels slow, maybe it's just my imagination