Personally I find it a huge waste of time, energy, and a distraction. Since on most image boards content only survives a few weeks or so, boards get slided, infiltrated, manipulated with almost no effort because of the "anonymous" and fast-moving aspect of image boards.
Of course there are some benefits to image boards as well, the fact that people can share images and files is one thing and that people have a feeling of anonymity so people feel less inclined to control their speech.
But, really, can't we come up with something better that tries to combine the good parts of several platforms that have shown to work quite well such as forums, chat (rooms), user-curated submissions (Voat, Reddit), etc.
Though, it doesn't really have to be an all new platform it could also be a collection of minor changes to how image boards (or some other piece of software) operate to create a better platform.
Personally I'd like to see a platform that incentivizes the re-use of files and pieces of information without having to endlessly re-post the same information over, and over again.