So u can unlock items and gear trough legacy that helps u out when u make a new char, and basicly makes ur lvl 10 companion 3 times stronger then u? What level of legacy would u need for that?
You really don't get stronger at all. Most of it is cosmetic or convenience. For example, the speeder makes it easier to get around, it does absolutely nothing for combat. The DD lightsaber crystal is pretty much level locked, so once you get higher levels it is worthless, not to mention ugly. The party Jawa is cool, but offers nothing to help your toon. Lagacy does offer you some advantages, but certainly nothing to make you 3 times stronger than a starting toon.