unfortunately the only reason i see as good enough to make any changes to a magazine would be profit..
you can petition all you want but if the profits arnt falling then there would be no reason to change, for example.. you complain about ads but ads are the things that are making the magazine money.
the only reason why you liked fast fours back in the day is because it was focused to a younger age group, now that your older you dont like it as much.
Fortunately there are other magazines such HPI, Zoom etc that still focus alot on performance, i suggest you switch mags