Remove 99& sped up & reduce Training speed boost duration

I think that the gameplay lost some basics mechanics when they firstly introduce 99% speed up and instant training speed.

I think if developers can reduce the training speed boost duration (for exemple, 27 hours to 15 or 12 hours duration or even remove instant training boost, we will get back to a more dynamic, strategic and fun gameplay.

What do you all think ? (coming from a player who coined insta in 3 different worlds)