Alignment: Blurring the lines

We didn't get to play in last night's gaming session, but I did get to thrash out some ideas for house rules with David - and he made a very valid point about the dullness of "Neutral" characters(1). With that in mind, I've been considering replacing the nine alignments with nine overlapping blocks of four:





...in that this gives a better handle on personality and motivation, while still representing the moral (good/evil) and organisational (law/chaos) axes from TWBSRPG... The central four blocks loosely represent "Neutral" - as in no particular leanings in any direction - while still giving suggestions about personality. Similarly, the top-right four represent "Chaotic Good", the bottom middle represent "Neutral Evil", and so on.

I'm hoping to expand on this, but I'd appreciate any feedback on the idea...

(1) Dave's argument was that Neutral characters have no motivation; no real urge to do good or ill, or choose to follow or disregard the rules. The other classic Neutral archetype is the "True Neutral Druid", a character who consciously strives to maintain the balance of the world, which is often difficult to fit into party motivations.