One thing I been thinking about (in that ever churning, unable to focus mind of mine) is in changing the straight ST to a modifier for my Eira setting. What this would mean then is that a level 1 cleric has a 0 ST modifier while a level 10 would have a +4 ST modifier (mod increase every 2 levels). So if, say, the Referee wants the Cleric to make a saving throw or be hit with the charm spell, the character would have to roll a d20, add the ST mod and see if it beats his or her Wisdom score.
Originally I was considering getting rid of saving throws altogether and making it just a meet or beat system. However, I thought that would be unfair to long living characters.
So, what thoughts are out there on this?