The point of a game is to provide an enjoyable experience for the user. If the experience stops being enjoyable the user stops playing the game. Since a monthly fee is being charged for SWG the developers will not want the users to stop having an enjoyable experience as then they will stop playing, resulting in less revenue. Make sense? Good, it should.
This SIMPLE concept dispels all the theories that you have to talk to every NPC in the game 5,232,249 times or find a few randomly spawning, rediculously rare NPCs. Why is this? Because the aformentioned methods are simply NOT FUN. They are incredibly boring and tedious and are really not much of an "adventure." If this is, in fact, the method for unlocking a force sensitive slot then it's an incredibly boring path. Boredom will lead to less revenue, as I previously mentioned.
The idea of being able to become a jedi is appealing to MANY people. Therefore, the developers are not going to limit being able to become one to the select few people immune to the effects of total boredom and who don't place a value on their time. If this the case a major selling point of the game to the masses, who the developers really want to target as there is loads more money there than a few niche gamers, is eliminated. It doesn't take a degree in marketing to realize this is a bad business decision.
It has been stated that the path to becoming a jedi will be hard. Hard, but not boring. The NPC theories are, quite simply, boring. Hard is more likely to be the killing of various tough creatures, talking to a few NPCs, exploring the planets, etc. Hard is NOT covering every square inch of the map talking to everything in site. The only way that is hard is in the fact that it would be hard to not experience a mental breakdown in doing so.
What everyone has to keep in mind is the overall goal of this game and overall goal of any business venture. Sony is in this to make money, plain and simple, just like ANY business. The way they are going to be able to make money is, like I previously stated, by providing an enjoyable gaming experience where one can achieve novelties such as jedi without straying far from an enjoyably experience the whole time.
It's really THAT simple.