Dekay, there are several VTA adjusters available for all the Rega arms. But, they are not "on the fly" adjustable. Origin Live and Express Machining both make them, and I think there are others. Typical price is around $40. Not the easiest thing to use, but does the job. If you could design an "on the fly" adjuster for the Rega arms, you could retire on the money you'd make off of it.
