So pretty much, it didn't matter if you were a threat or not, you were eliminated. The Emperor did that, I think. The Jedi kept lists of people they thought would have Force sensitivity, and that's how he tracked people down and eliminated them. Obviously - he didn't get everyone, so he must not have had a good source after the Jedi's lists ran out.
Every Jedi builds their own lightsaber, so we're all pretty connected with our own. We can use any lightsaber, but we have a special connection with our own. With the lambient - it was even more complicated because the Yuuzhan Vong shape living things to do certain tasks - they don't believe in technology. So what I did with the lambient, which is a plant, was really appalling to them - me using a living thing with my non-living technology to create something new. I hate to start taking things apart since I don't know if I can rebuild it here - or if I even have what I need to rebuild it.
What's the plant like - the one that's related to your powers? Do your siblings all have the same power you do?