Last winter, I bought more plastic buckets and went to primary-only. The beer is just as good, maybe better (although that is perhaps from better technique on my part, too). Now my carboys sit except for dryhopping, special additiions, or when the recipe for a really big beer calls for it, e.g., my last two beers in the secondary were a MW Bigfoot
Barleywine and there's a Founders Breakfast Stout clone in there now.
This thread on extending the primary does appear to have opened up another familiar issue in the forums, though, which is "Well, the airlock is bubbling....but I have no beer, can I drink it this weekend?" The answer to this is to do a search relevant to establishing a beer pipeline. Once again, "revvy" (and others, too) have chimed in on this subject. It requires the extension of logistical thinking from what's on the shelf / in the keg now, storage, and what's wanted to drink next Spring when the tulips are up, or in the dog days of Summer.
When the homebrewer can achieve a disconnect between what is being brewed today and what is being consumed, then the pipeline problem has been solved and another issue falls away.