There's no healing and buffing repeatable records for the same reason healing and buffing suck in reives, and in campaign, and in besieged. You can have a bot do it in a corner 24/7, while you're afk. Just set it up to

1)Equip the required amount of HP+ gear (Karieyh+1 gear has hp+400 by itself)
2) cast a cure
3)Remove the gear
4)Repeat.

Then trade them in for skill books, sell them, sell the gil. Or just get free gil without being at the keyboard. With absolutely zero risk. At least the killing stuff trials has a chance of killing you, since you're actually fighting things and running around in aggro, regardless of how weak the enemy is.

If people getting 200 bayld/hour afk'ing in a reive needed to be nerfed out, getting an unlimited amount of sparks without ever needing to play the game definitely will.