Interesting Derel. I have a couple Roush cars on my TDN and have not had any issues reading out a car with a Roush OS until this one. I believe my customer is going to try the flasher and see.
Yes the cruise would still work as normal driving. You could do a switchable tune that had stock parameters, but a true stock tune would have the factory ford operating system in place, as where PCMTec operating system is custom of course.
E85 is the best bang for the buck, but not everyone has steady access to E85. Also, as you know, the 24s cannot be custom tuned...so some people will want to find power where ever they can. Yes they are very expensive with high flow cat options.