Robin.
I haven't read the petition as personally most of the changes that I see everyone is complaining about is to do with a section of the sport I know nothing about and so won't comment as I'm not in any way educated enough. Therefore I also do not know the names, so if they have posted in this thread under a pseudonym I apologies to them as I didn't mean to belittle their achievements.
However as per our protracted discussion last night down the club, I personally felt your arguments with regards to the finals changes were a case of you wanting them to stay the way they have always been, as they work for you, rather than possibly looking at how its possible to improve the attractiveness to the media and general public who know nothing of the sport worldwide.
Also as per my comments last night, although not shooting with a pistol/rifle, the Archery (still a shooting discapline) final were changed between Beijing and London to a very similar format as the ISSF have proposed, and since the archery finals became attractive to the media, publicity improved and GNAS the UK National Governing body have seen a 16% increase in enquiries from prospective new members asking about local clubs, if the same could happen even at a lesser volume then surely that can only be a good thing for the sport. Unless of course you have no wish to see the sport grow and possibly gain a better understanding by the general public.