Not to put too fine a point on it, but does Bard really need Goad? I mean, we can equip invigorate for a free 400 TP if we get really low, and unless you're spamming Wide Volley endlessly, you shouldn't be wrecking your TP too badly. Sure, it's good for tackling crowds so a little extra TP is always nice, but Goad isn't particularly fast at recovering it. It's effectively the same as Invigorate but takes 3 minutes to get there.

It would take 9 seconds to earn enough for a Quick Nock, and a full 21 seconds for Rain of Death. I'm not saying its useless, far from it, but it's not going to add much DPS overall since it's unlikely you'll be spamming skills long enough to win enough TP back. At least, not before running dry at least once.