The difficulty is fine. People just need to learn to play their class properly. I am often amazed how many under-geared and under medpacked players are and complain they cannot solo content. In addition, many people who complain about solo content do not use their companions, and when they do, neglect gearing their companions up.
I soloed every Sith class and 2 republic classes to 50 in beta. If you find the content is too difficult, take some time out to check all your gear. Be certain your companion is equally equipped as you are. In addition, if gear is not the issue, it is more than likely your play style. Be certain to buff and use debuffs. Use CC, and the rest of your abilities to the fullest. I often find most soloers who claim difficulty is too hard because they rely only on a few of their abilities and not all of them.