I was at the JMPS conference in Pt. Mugu last month and we had this exact discussion. All the pilots were saying we want to be able to sit down at one computer, build our flight, get NOTAMS, get a weather brief, print a 175 and file. The word we got back from -299 was we can't do that. JMPS has all sorts of stuff built in to get for example current / forecast winds to better plan a route, but I have never been able to get them to work.
This is exactly what I wrote in the critique at the JMPS booth- I want something like Skyvector.com but with Wx, Notams and TFRs, and all the calculations for fuel and TAS, and I want it to have the ability to print and file the 175.
I'm sure someone out there can make it work. As it is I'm not impressed with JMPS- it's a clunky non user friendly program that screams windows 3.1 on a 386...