I want to make a return to the "Garage Band" aesthetic that marked the early days of role-playing games. What does that mean for me? Well, a few points:
1. Complete games. Let's face it, the supplement gravy train isn't really doing a lot more than just propping up sales. Personally, in a lot of cases I think that it is going even further and sapping a lot of creative juices from people. Why both creating your own interesting stuff when you know that Splatbook X will do it for you. This doesn't mean that there shouldn't ever be supplements for games, far from it.
Games need to be designed in a way to not only enable play, but to also enable the game masters and players to further be able to develop the game in their own style and direction at the gaming table. That is supposed to be the ultimate extension of a game anyway, what people do at the table.
2. Support the fanbase and it will support you. It's just sad when a publisher drops the fanbase that helped build their popularity for a "cooler" one once they have a bit of success. Dropping your fanbase for a "sexier" one is a pretty short termed, and I would say even myopic way to build popularity. Stand by your fans.
However, this comes with a caveat. At the same time don't design just to hit a particular sweet spot with a fanbase, or try to make each and every person happy with your games or designs. It just isn't going to happen, and I would bet that it will also lead to a lot of writer's block just because things are being overthought. Besign a game that makes you happy, that causes you to have fun at the game table. The rest will follow because, and this part always surprises me when I release a game or stuff, there are a lot more people out there who are interested in the same things that you are than you would think.
3. Hype. This is a big one. Too many designers get overly enthusiastic after a blog post or two and start hyping their cool new game. The problem is that they don't actually have a cool new game yet. Don't curb your enthusiasm because that enthusiasm is very important. After all, if you're enthusiastic other people will be as well. In gaming nothing is as infectious as enthusiasm. The problem is that, more often than not, hype just leads to RPG.net threads with titles like "What The Hell Happened To Game X?" and the resulting accusations of vapourware.
Be enthusiastic and talk about your games, just don't get the cart get in front of the horse.
Keep in mind that all of this is just a Beta version of things. I'd also like to hear what other people have to say as well. I'm sure that parts of this will be better received than others.