Something gamers really liked about the Playstation 2 and the first wave of PlayStation 3 consoles was the idea of backwards compatibility. In this day and age, and with this next generation, this seems like a given; but this feature doesn't seem important to Sony. I know the majority of gamers feel backwards compatibility should be included from generation to generation.
If Sony really wants to dominate they need to keep the price of the console down. This could help move systems, especially at launch. By keeping the price down, this could let them pull ahead of the competition. When the PS1 came out, Sony sold it for less than the Saturn.
Sony also needs strong third party support, which is how the Playstation overtook the competition for a time. If the PS4 has good third party support and offers unique games with a strong launch lineup, the console will succeed.
Some of the great ideas that came out of this generation included PS+, media streaming options, easy Hard Drive upgrades, and free online play. PS+ has been very successful. The discounts, cloud saves, and free content are great. Sony needs a service like this for the PS4. I'm sure Sony will include Netflix, Hulu, and whatever other streaming services are in the next generation. Two of the other good ideas Sony stood behind were the ease of use concerning gamers swapping out PS3 hard drives on their own. This made it very cheap to upgrade and get more space, and gamers weren’t forced to buy expensive, first party storage options. Free online play was also a nice benefit.
Sony does have a few things to fix for the next generation. This includes cross game chat between gamers. Gamers were promised this for the PS3 and it never came. Another problem were the online issues with the PS3. Some gamers complained the PS3 took longer than needed to download game updates and patches and even though online play is free, there were issues. Microsoft charges for XBL Gold, but they made playing online and downloading much more streamlined for the majority of gamers. By working on a few of these problems Sony could clean up its online experience, which was still better than what Nintendo offered this generation. Hopefully, Sony will have an easy way to transfer data between the PS3 and the PS4, whether it is game saves or trophies.
Hopefully, the PS4 will be easier to develop for which was one of the biggest complaints about the PS3. But who knows? If Sony can come out of the gate swinging with an aggressive launch lineup and aggressive pricing they could come out on top this next generation.