sbm12, this is a great tool!

In what capacity are you working with the GoMiles? Would you consider posting a separate threads on the TravelBuzz forum, just like Airline Route Mapper or OpenFlights?

As someone who has, several times, looked into the feasibility of mileage comparison, I see lots of potentials on this. I would really suggest you set up a separate thread (or have someone from GoMiles do it) for dedicated discussion.

That's a very noble goal, but I would caution on the efforts expanded. Given how, occasionally, some of the airlines themselves can't even price their own redemption right, you may be looking into a lot of edge cases.

Just for fun, consider how BA has (at least) three award charts. For some itinerary, if you fly AA only JFK-NRT, it is one amount, but if you fly AA JFK-NRT, followed by JL NRT-HKG, you are looking at a full distance-based award chart. For your tool, this may not just be complicated, it may also be infeasible (because you now need to figure out what specific routings are available, given the flight schedule, etc... at some point, you may as well redeem the whole thing for them!)

Also, in your mock-up, you are showing the redemption amount for a specific award. Instead of approaching it from a specific award perspective, I wonder if there is value in giving generic advice to someone who is considering which FFP to join. For example, we see plenty of newbies asking "I am relocating to HKG, should I join CX or stay with BA." If you tool can take a generic route (e.g. LHR-HKG) and advise someone on the mileage amounts for typical FFP, it could be very useful.

P.S. Not sure how far you have gone from a mock-up or in what capacity you are working with GM, but PM me, if you want someone to walk through some scenarios and edge cases. I would be glad to help.