I used it a 1.5 years ago, during the competitive phase, for a two destination trip on a different continent. I came away not entirely thrilled by the results of the experts. After paying the fee, what they found was slightly cheaper than what I was able to do independently, but had a funkier itinerary that didn't justify the slight price reduction (that may have been actually offset by the cost of using the service).

That said, I did receive tremendous feedback from Todd. Reading this post has me reassured that he and his team are on the right track.

My wishes—

I wish I had the money and time to seek out such types of fares/trips more often so that I could try the service again. I may have one such trip coming up but I still feel reluctant paying a fee up front for what might not turn into anything.

I wish FlightFox/someone would offer services to deal with the airlines' kerfuffle on multi-destination, multi-carrier flights. I swear, if you have to deal with any inconveniences in a situation like this, it is 100% "Hi, this is ABC Airlines, you'll have to call XYZ Airlines as this leg of the trip is under their control" and vice-versa.