On average you're still going to get 3-4 favor items per favor, giving you enough for 1.5-2 turn ins. If they were to signifcantly increase the yield more than it is, we'd have more gathered favor items than we would have crafting tokens.
The problem from my end was that I had to spend 15 minutes for one favor. That's 90 minutes on average to get enough materials to spend one crafting token to make one crafting material. Whereas the actual crafts themselves use anywhere from 3 to 5 of those materials. The amount of time you needed to invest between teh two was utterly skewed, and the 15 minutes made it not ideal to do your favors inbetween queues...or really do anything inbetween because now you have to spend the full 15 minutes just slamming away at the nodes.
