I'd say the Jesel approach has been proven on countless high speed race engines in NASCAR, NHRA, etc.

The Jesel low pivot approach is also what GM Engineering recommended years ago in their GM Performance books. GM recommended setting the 90 degree point at 1/3 lift.

I did the calculations years ago to figure out the "perfect" height that would minimize the product of travel and load and it was close to the 1/3 height that GM Engineering recommended. There has been a lot of discussion lately about static loading vs. dynamic loading since once the engine is running at revs there are a lot of other things moving around.

Having said all of that I prefer to run the rockerarms the way the mfg designs them. T&D knows what they are doing and so does Jesel so I don't see any reason to mess with it. Lots of T&D and Jesel equipped engines making lots of power and staying together for lots of rounds so I don't see any reason to re-design what already works.