http://www.1up.com/previews/elder-scrolls-skyrim-seven-things-need-to-know?pager.offset=1
I know Todd talked about how the birthsigns were twisted, and now they're simply consilations that guide your character's path rather than choosing them right off the bat. Can't find that interview for the life of me though.
Anyway, putting aside if its a good idea to do that to birthsigns and atributes or not, I was just trying to show how there could be a way to increase luck even without the atribute there. Not all the perks have to be clear cut, you gaining a new move or ability. They could be a little more mystic in nature too, if they so wish to take it that far.
My point at the end of the day though, is that a Security perk that increased the gold you find in the stuff you open isn't so crazy.
there are 3 main nebulae if i'm remembering right, the warrior thief and mage. the perk trees are located in their respective nebula
ex:
two handed perk tree is found on the warrior nebula
marksman perk tree is found on the thief nebula
destruction perk tree is found on the mage nebula
"Three prominent nebulae dominate the Skyrim heavens – the thief, the warrior, and the mage. Each of these represents one of the three master skill sets. Each nebula houses six constellations, each of which represents a skill. As in Oblivion, every player starts out with the ability to use all 18 skills – any player can use a two-handed weapon, try alchemy, or cast a destruction spell (provided you find or purchase one). As you use these skills in Skyrim, they will level up and contribute to driving your character's overall level higher.
Every time players rank up their overall level, they can choose a supplemental perk ability for one of the 18 skills. For instance, if you fight most of your battles with a mace, you may want to choose the perk that allows you to ignore armor while using the weapon. As in Fallout 3, several of the perks have their own leveling system as well, allowing you to choose them multiple times. Once you choose a perk, it lights up the corresponding star in the constellation, making it visible when looking up to the heavens while interacting in the world."
http://www.gameinformer.com/games/the_elder_scrolls_v_skyrim/b/xbox360/archive/2011/01/28/skyrim-menu-system-overhaul.aspx