MMO combat my way

I've been designing what I thought was a unique and innovate combat system for my game if I got my dream and set it as an MMO.  Its been rattling around in my head for a while and since I cant sleep I thought I'd inflict it upon you.

The game would work on EXP earned for tasks done.  You heal you get healing exp.  You use nature (druidic) magic you get that kind of exp over divine (clerical).  You can equip all but exotic weapons and at least try to give them a go though more advanced ones your better off trying lower skill ones first.

As you quest you get relevant skills and exp to make you more specialized.  If you want to be a cleric following up on their quest lines you learn little clerical spells and abilities others wont.

But that's just the start.  I'll have a system for player designed abilities allowing the player to have flexibility and personality.

Each ability starts with an animation 2 attributes.  As you 'level up' in the related skill it gets more attributes until you get 4 and then you can assign 2 more at penalties.

For example the 'Uppercut' (improved punch) is learned after following a brawling/boxing quest chain.  It would look like this;