There is little doubt CAMRA has played a major role in wresting the pub trade from the supplier and giving it back to the consumer. This has been through choice of beer certainly but also through a significant amount of lobbying to open the pub trade to competition, pressure to keep duty in check, preservation of historic and 'community' pubs as well as raising awareness of real ale.
To understand where CAMRA needs to go you need to understand how they arrived at the real ale vs craft dilemma. In the 70s and 80s real ale was a relatively rare product. In the 90s it started to become a premium product and increasing numbers of people were prepared to travel to find it and to pay a premium for it. This undoubtedly helped the trade and thus pubs were enthusiastic to stock it. Most importantly though was that real ale was appreciated across all ages, regions and, dare I say it, class. 1700 breweries and almost every pub in the land having at least one real ale suggests they succeeded.
Real ale is a unique product. Easy to make but with significant transportation and shelf life problems (although cask breathers have improved this somewhat). The rewards are a genuinely unique drink in the world of beer and cannot be readily served at home (again good for pubs). But let's not pretend people were drinking real ale solely because of the taste. There was an image associated with real ale drinking that in the 90s changed from 'beards and jumpers' to professional, traditional and even fashionable. CAMRA continued to innovate with LocAle and other initiatives but I suspect since the early 2000s CAMRA themselves have been riding rather than directing the beer revolution.
Real ale, as everyone knows is only one style of many hundreds of beers. There are many challenges left for CAMRA to deal with not least in keeping an eye on the big companies producing poor quality real ales and marketing them heavily (the curse of Doom Bar springs to mind). Keg beers (call them craft if you want) are easier to transport and last for months or longer but I believe that even the worst real ale stands head and shoulders above the depths to which keg beer can plummet. Quality in real ale can largely be maintained by ensuring certain rules in production are maintained, which is easily to police. With keg beer this is not so and the same process can be used to make both great and terrible beers: I suspect it would be impossible to maintain quality. I am certain that the second CAMRA backs keg beers, cask beer would start to drift towards keg with 'CAMRA says this is craft beer' prominently displayed. There are many pubs in Scotland that sell Harviestoun Bitter and Twisted on keg and I have seen Supreme Champion Beer of Britain on the tap even though the keg version tastes nothing like the beer in cask.
CAMRA still have authority on real ale and they must work to protect this. And the dilemma is that if they are to promote keg beer, what next? Saison, gueuze, trappist and Kolsh? The message of quality will get lost in a multitude of styles and inevitable commercial pressure will lead to a deterioration in the quality of both keg and real ale. We are all acutely aware that fashions can be started by big and clever advertising campaigns and in a flash we find keg Doom Bar is the only beer in the pub. There is no reason for CAMRA to oppose other styles (I can't think of a beer festival I have been to in the last few years that has not had a craft and continental section) but CAMRA has a strong core message that it needs to work more than ever to protect. It's great that many more styles of beer are becoming available and appreciated by more especially younger drinkers. Even the enfant terrible of keg, Brewdog, want to start producing lambics. Bravo! But let these easily stored and transported products run their own course. CAMRA look out for pubs too: it is inevitable that its aims will overlap with those of other drinks in the industry and it should be able to work with other groups. However real ale will always have challenges and needs a dedicated organisation to ensure its success for the next 45 years.