I would like it if you get a (very very tiny) benefit with each magic and constitution point.  For example, for each magic point you get an improvement of 1/40 in your magic regeneration.  At level 60 instead of having one mana regen per second, you would have a 1.5 regen.  Every two seconds you would regen 3 mana points instead of 2.

For constitution each point would give you 1/70 faster health regen.  At 105 constitution you would heal 1.5 health per second and 3 health every 2 seconds.