The real purpose of the various Fuel Pak iterations is to help sell exhaust systems, as well as add some extra profit of course. The previous Fuel Paks had the same limitation in that they had a database of suggested settings for various bikes with their own brand of exhaust systems, but not much if anything for other brands. From the little information I can find on the Fuel Pak 3, this still looks like it's mostly just like the previous versions in that you use a canned map they provide based on bike model and their exhaust systems. They do imply that this version will retain closed loop capabilities, which is much better than the add-on boxes that just bypass the O2 sensors and run open loop all the time.
Time will tell if it's truly a useful tool or if it's just one more piggyback device with the added gimmick of a visual interface. You would think for the suggested price they would at least include a screen versus making you use your smart phone. I don't expect many people will bother after the initial gee whiz wears off; how often do you really need to study the simple data this thing will display? Personally, I'm of the opinion that it is best to get the most capable system in the first place, get the bike tuned properly, and then leave it alone until you make changes to the build that require a new tune. It is not necessary or even wise to constantly be screwing with the tune if you retain closed loop operation.
Jerry