Given the lack of top class spinners we are producing (or not producing), I reckon any attempt to start to resolve that situation has to be worth a shot. It may not work, but at least they're looking to address it.
Many other sports make significant changes to rules for many reasons; combating player's bending rules to gain advantages (no, not football, they're stuck in the dark ages) and adapting playing areas to combat rising skill levels. Give it a go, see what happens.
It's one theory, hopefully there will be a few more (like the continued use of a track one...)