Well if F1 is consistent at one thing, its being inconsistent. Slicks to grooved back to slicks, back and forth with mid race re-fuelling down the years, even this year we have once again gone back to wider cars wider tires and less restrictive aero regs.
So in a few years once the benefit of pushing engine tech forward has stalled, and in a bid to cut further costs, i wouldn't put it past them to change yet again.
Things do move on, but in F1 it often circles back.
F1 moved to grooved tires on safety grounds, that proved not to really make things all that much safer, they went back to slicks.
In race fueling isn't coming back, on safety grounds, which is why it was rid of as well.
This year F1 went back to wider tires because they wanted faster times than ever before, and a hope of improving the racing.
They went to less restrictive aero regs, because of the tires and because it is hoped that the irreversible change done in 2014 will have the gap closed with these 2017 regs. The push for engine tech wont fade, if anything it will keep going until one of two things happens, every thing goes EV and thus F1 will die most likely, or two a new combustion fuel source is viable, or a mixture of these things.
What is for sure, is that the FIA and even more so the manufactures that make F1 what it is, will not develop something that has no benefit to them. The FIA knows this and that is why for the fiftieth time in this thread someone has had to point out the reality of it all, when someone acts like the nostalgia they have is what actually defines something as complex as the sport of F1.
F1 circles back to things, because there is only so much that F1 in general can do to change up the racing and try and break up a dominant team.
