Legacy of crafting is a pretty awful character perk for the price.
350,000 credits for a mere +3% chance to augment gear is... really bad. It's not +3% critical, just +3% chance of augmented items. I strongly recommend avoiding it.
Wow, how many people seriously need to spread misinformation in this thread, especially when there is a thread confirming that legacy of crafting increases crit on everything, not just augments.