My observations from pre-season testing last year, indicated that they were exploring over-run MGU-H generation, apparent from the extremely cool "backfires" etc from the Toro Rosso's.
Then before Australia there was a reduction in the number of exhaust systems permitted to be used...
Then the fuel constant factor was reduced at part throttle taking away the ability to harvest electrical energy as had been designed ( and legal ) at the first ( subsequently ) cancelled GP. It appears Ferrari realised they could restrict at least one manufacturer by "helping" the FIA govern "cheating" Except Ferrari's alleged accumulation of fuel under said conditions was illegal, Honda's was legal as was harvesting electrical energy. Remember the catch phrase " Charge-on"?
Then the rumored banning of "extra harvest" that was legal also
Think that they lost a lot from having the whole concept deemed redundant.
At the same time it also took the pressure off Mercedes and their reliability issues.
So yeah, I don't think I would stick around.
Just my take on it all