[quote=@Dynamo Frokane]
[@Nariata] thanks, I think I came across those faction acronyms while playing battlefront, it makes sense now.

Could you explain a little bit about strenghts and weaknesses of lightsaber crystals?
[/quote]

Oh that so slipped my mind.  Indeed i can!  Now before i go into depth about these crystals i will say that i will be taking a page from Knights of the Old Republic.  So a good spot to read up on crystals a good place to get aquanted with the concept i suggest looking [url=http://starwars.wikia.com/wiki/Heart_of_the_Guardian]here[/url].

Each crystal is mostly unique when compared to a different one.  Some are there to simply change the color of the blade (often used by Jedi's to show the diffrent rank or type of a member.) while others can boost the force ability of the user.  Now im not going to say no to a crystal that simply changes the color or boost the force ability of the user.  The others, however, might require my blessing so i suggest pm'ing me before hand.

[@Dynamo Frokane] So in short, there is no true strength and weakness.  There are just the crystals and what they do.