Westwind,
...one of the most frustrating things is getting ENOUGH articles to fill the pages!!
I can imagine this holding true for aviation too. Inspite of the depth of knowledge needed, for the man with a spamcan it is a static industry when compared to something like moutain biking where seemingly no end of products and inovations are hitting the stores on a daily basis, where art of staying upright at great speed (relative) and the techniques to maintain fitness can fill volumes.
With aviation there are very few different ways to fly a plane. The methods are tried and tested. The technology doesn't really change much. Sure there are some exciting new things happening like the EFIS (new to GA), X-Prize, diesel engines and personal jets. Even grouped together these are hardly capable of filling a magazine.