Please help! I am looking for help / advice from experienced rigger.
I have been working on my game for a while and we have playable demo available (http://www.kot-in-action.com/prophecy.html).
Until now I have been using my own rig, but it’s not comfortable to use and it’s pretty ugly 
Here it is:
http://www.kot-in-action.com/files/misc/blademaster_daggers01j.zip
What I would like to have is something like that:
http://www.virgiliovasconcelos.com/cms/imagens/blog/galerias/213/5.jpg
What I need is to be able to switch pivot point for character’s feet (to roll around toes or heel). switchable IK/FK for arms (I am not sure if we need the same for legs, but it wouldn’t hurt especially if we will animate flips and such) and some basic facial animation controls.
Also it would be interesting to try to have IK spine.
How can all that be done and if anyone has simple, but working rig with all features mentioned above, can I put my hands on it, please? 
Thank you.