A part from being an "open" game, I wondered whether you liked Morrowind, as it has an "utilitarian" level build (you increase skills by actually using or training them) and Luck is a significant factor (that can be increased only by assigning valuable level points).

So you might have a look at it - I personnally think it's worth it in any case

In times of crisis it is of the utmost importance not to lose your head (Marie Antoinette)