Okay, in that case feel free to close the issue!

Note: 
- xyz() will still be called on the behavior, since the __call implementation checks behavior functions before checking any properties any where.
- calling a getter is cheap in terms of CPU / time
- Adding this support will make Yii more consistent and improve default PHP behavior.
- It will make code more DRY, no need to create wrapper functions like 

         function test() { $func = $this->testFunc; return $func(); }

- Even when expecting default PHP behavior it won't cause errors since you are not changing existing behavior but extending it. (The current behavior is to fail which is never done on purpose anyway).

All in all, I have seen no valid counter-arguments besides the fact that it does not replicate default PHP behavior. 

In the end this is up to you, so close it if you want to end the discussion about this bug / feature =)