Funny idea, but there are too many differences between the cameras.
The product cycle is too fast, no hacker will start reverse engineering.
I liked the canon hacker group, they solved some problems for us.
- there is no firmware upgrade ever! (this should influence our decisions!)
- you have to follow the hardware "update" line suggested by Panasonic if you really need new features (eg. more noise)
- I prefer a brandware update after seeing the first results with the FZ7
just my thoughts.....
....but I still like my FZ5 just as it is!