Call shot/safety eliminates the luck factor of the two way shot. If you shoot and hook me....that IF is what makes the two way shot a luck shot. Grady played call shot in one of his tournaments and Tony Robles's tour plays that way now, I believe. Granted, a lot of people don't like this because, like push out, it makes the game more difficult but, some people think, more fair.
Well I'll be honest with you, I look at it from a different perspective.
If my opponents running out on me & jaws a ball & he had perfect shape on the next ball & the position of the cueball that left him with perfect shape on the next ball is such that I'm hooked & can't see the ball he jawed, I don't curse that he got lucky & hooked me.
I'm happy that I'm at the table with an opportunity, albeit a tough one. The alternative as I see it is he normally wouldn't jaw that ball, he'd be out, so I actually feel fortunate.
I think more than a few here have been on both sides of this. Many craft their game with 2 way shots. Ginky & Danny Basavich come to mind for me as 2 of the best I've seen at it.
The problem is everyone's always trying to change this game into something it's not. These rolls have always been part of the game. My Pop used to call 9 ball a Carnival game because he hated those aspects of it. He was an old school 14.1 & one pocket player. 9 ball was always a gamblers game, it wasn't like it was invented when they decided to try to put pool on TV, it's been around forever.
Like it or not the TE days of 9 ball was the biggest boon that pool ever had, it's just a fact. Wherever pool is going it's not going to get far with 1 game played under 74 different formats as has been going on for about 15 years now.