Not to speed up flowering but "increase" it.
Again, any thoughts are appreciated.
I believe we would benefit with a rewording of your question. You are theorizing that the more light energy the plant gets, the more sugar it will make, and thus, bigger, fuller buds, not necessarily faster maturation.
Correct me if I am wrong, but I believe this is a more precise way of asking your question.
I will answer this not from experience, nor extensive education, but from some education, and reading many forum posts.
During vegetative growth this theory holds true, more light, more sugar, more growth. But during flowering, the entire process is changed, the most important processes happen at night, when the lights are out. So light is still important for the plant to make the sugars it will use, but in all likelihood, it will have an abundance, and will benefit from longer periods of darkness in which to use the stored sugars to develop the flowers/buds.
I've seen many people reference a plants leaves functioning like a solar panel to explain the theory. Take this example further and think of the roots as the battery and the flowers as TV you want to power. You built this system to run your old Tube TV, but you have just traded it in for a small, efficient LED TV. The infrastructure is build for a big load, but it doesn't need it anymore.
This might also help explain the function of re-vegging a plant. You helped the plant build a great infrastructure to take in nutrients and light, but just hacked most of it away. Leaving a little behind to regrow, and it will grow faster and stronger in the end because it doesn't have to waste time rebuilding the infrastructure.
Similar to this thread, its ready to go back to sleep.