The plan is for the forum to be simple to install, simple to change and simple to create plugins for. So many times I go from a site to their forum and the forum looks completely different. Even if they have managed to get the colors the same as the main site. I'm not saying that users will be able to make A Simple Forum to look exactly like their home site, but a close approximation is better than not.
Forums have all been the same for years and most of them are exactly the same. I'm not only looking to create a forum, but to change the way they work, and the way they are presented to the user. Granted you may not see much of hat yet but I need to build the core before experimenting and implementing new ideas. One example is the pagination, although there are a couple of forums that do it the same way, the plan was to remove needless page redirects and just use a continuous stream (like facebook).
I also want the community heavily involved in this project ( I haven't been able to drum up much interest so far ). Plug in modules made by the community are good, but what about having them already in the code when you download the software? You may say that this will bloat the software with unneeded code but it will all be modularized, meaning users will be able to pick and choose components when they download.
I also want to offer more advanced features like post and topic analytics and provide an updated product to an old market. I have had a look through the source code of most forums out there and the code is very out dated. It could be a lot more efficient if time was taken to rewrite it.
I'm not saying that my software will be the best on the market ( when I finish it ), but I will make every effort for it to be competitive.