Since it has become more and more difficult to keep all toons up to date with their equip, legacy armor has become a must to players with ten or more level 55 characters.
Thing is, I (and many others, too) don't want all their toons to look alike due to the same armor.
My idea:
What we have ingame so far:
Appearance of armor pieces can be changed => dye slot
Armor can look different on republic and imperial side => rakata, columi, battlemaster, war hero ... etc.
Now, I had the idea that there might be a possibility of taking out the appearance of a specific part of armor and put it into another part (still chest to chest, legs to legs etc.). So, similar to the dye slots there would be an appearance slot. One could, for example, take a random chestpiece (e.g. one from the cartel market) and put its "appearance" - in form of a module - into a piece of legacy armor.
This way, we can create our very own legacy set from different parts of armor, everyone as he pleases.
But what if there is a female counselor and a male sorcerer?
This is, where the different appearance on either side comes in. If a piece of armor, that has been modified like this, is send to the opposing side, there is the possibility of doing the same procedure with a different kind of apperance (until then, it might not be useable).
So in conclusion there would be a legacy armor that looks very individual on either side.
But since this mechanic somehow would have a slightly negative impact on the cartel market (one would no longer have to unlock certain things in the collections for different characters due to the legacy) the extraction could be paid not with credits but with a moderate amount of cartel coins.