Maybe I shall make some my statement so that it doesn't look I'm just arrogant type disagreeing with all :)
So, what can WRC offer to the audience?
Mind-blowing machinery? No for obvious reasons. In 2012 none can be astonished by a Fiesta with 300 Hp. For that it would have to be 1000 Hp strong but than we have the safety magic formula. I don't see much space for improvement here...
Adventure? No. Who can see any kind of adventure in just 1,5 hours of competing over nothing more than a common working period? Teams have luxurious service hospitalities, everyone sleeps in hotels. The feeling of adventure is definitely THE thing which appeals to the crowd in 21st century. There is plenty of space for improvement here. We need real stories at the end of the day not just a table with numbers. The audience has to find itself living the event with their heroes.
Events with unique character? No. Some events remain unique thanks to their nature but at least the format shall differ to allow event creating their own spirit. And we have too many same looking ones...
Spectacle? Yes, sure. I still can't believe why it is so difficult to sell so much action-packed images...
Stunning scenery? Yes, sure. Rallying and marathons have by far the biggest potential of all motorsport kinds in this matter.
Some other points...
Why the hell do we need a competition fuel? We use 5x more expensive fuel to make just an average power from engine with tiny restrictor. That doesn't make sense.
For what do we need homologations? To protect business of manufacturers or to make sport more safe or more fair? IMHO the first is right. A simple set of common rules would work way better for large majority of competitors. We don't need parts which cost ten times more just because they have the right marking on them.
Do we need to make cars more and more standardized and more and more ancient in comparison with stock machinery? No, motorsport needs to keep the engineering spirit. Allow everyone bring their own ideas and open the door to all those crazy inventors who fill Dakar, hill climbs etc.
The time showed that making cars simpler under current homologation rules is just a waste of time. What simpler can we bring to the top level of rallying than S2000? It's year 2012 for God's sake! The car is full packed of 1980' inventions and still expensive like hell. What will be next? A one liter FWD? A full factory shopping bag won't cost less , if You ask me...
Why do we need a special formula for world championship? To make it unique? But than why do we speak about cost? These two ideas are in complete contradiction. We can't make something cheaper if we limit the production to few single pieces. Did super hi-tech WRC (in comparison with 2012 ones) do bad in 2000? No, they did excellent. Did S2000 do bad? No, they did excellent. 300 pieces sold worldwide in some five years. Peugeot itself sold 100 pieces of 207! What common have these two cases? They were allowed everywhere. Is it accidental that WRC started to die after it was banned in regional and national championships? I believe it isn't...