Not sure if anyone's suggested this yet....but maybe the "wheel" the dev team refered to, as symbolized in the logo, could be somewhat a radar-type chart for allocating skills and/or stats.
you might start out with your radar small and balanced in all attributes. once you start "growing", you increase the size of your radar progressively, in the direction in which you start to specialise in, until the radar area caps. from then on, your radar becomes skewed depending on what skills you use most often. so if you're stronger in a certain attribute, your "radar" draws towards that weapon type while making you weaker in others.
Increase in your proficiency in a certain skill would depend on the frequency of use, similar to the mechanics in last remnant. that way, your max stats/skills can be restricted without being overleveled with your "growth". only draw back is that, as in last remnant, it will be difficult and tedious to change your class.
Edited, Jun 9th 2009 9:46am by hiyohiyo