what is needed is for a cool programmer to create a website where satellite hobbyists could input their reception data including date/time/sat/tp/receive dish size. Once this data is collected, it could then be put in various output formats (in real time?) on graphs including dish size vs sat, dish size vs tp, etc. With a lot of data, it would be useful for hobbyists and maybe even for sat operators who want to understand their actual measured footprints for their purposes. This would be a parallel of amateur radio operators that report in real time stations they have communicated with around the world and then the whole community understands current propagation conditions.
Validation of user submitted information would be difficult. So many variables including:
Signal Quality uniformity
Dish alignment
Dish accuracy and efficiency
LNBF performance and skew optimization
Feed line length and performance
Insertion loss calculation
I don't believe that user submitted signal reports yield much useful information as there are so many variables in each system. The most that I would expect to be useful is a consensus if a channel or transponder is active, and even that is frequently up for debate!