Saeviomagy
Adventurer
4 stat points will just mean that a character's lowest stats will get a little lower. A 12 will become a 10 and a 10 will become an 8 most of the time.
In exchange for that, you get 2 extra at wills and the best armor. Expect lots of one-dimensional rogue/rangers, invoker/clerics, X/shaman (because at-will spirit companions are pretty ludicrous) etc. etc.
Seriously - the hybrid rules do what you want and so far the optimization board hasn't broken them in any serious way, while at the same time they make a decent showing. That tends to suggest that they're more-or-less balanced.
In exchange for that, you get 2 extra at wills and the best armor. Expect lots of one-dimensional rogue/rangers, invoker/clerics, X/shaman (because at-will spirit companions are pretty ludicrous) etc. etc.
Seriously - the hybrid rules do what you want and so far the optimization board hasn't broken them in any serious way, while at the same time they make a decent showing. That tends to suggest that they're more-or-less balanced.