The GB are not just front man, they're still the keepers and creators of doctrines.
And their new doctrines does not show any sign of direction or planning, they are just reacting.
We would see a better clear direction (we cannot answer for sure if they are going mainstream or underground) if was someone behind the curtains.
The only clear direction is the simplification (dumbing down) process, but it's not something planned.
The legal dep. seems to play a role of limiting the more absurd things, like blood factions and donations were invented purely by legal reacting.
Simply put the WT is a Ouroboros system, of course there are some people with more power in hands, but still is relative power.
It's the same thing to ask who controls the world. The right answer is nobody and everybody at the same time.
Going to fantasy land, is the same case of Jehovah's Rules being bigger than Jehovah itself because once been stablished he just can't go back. LOL