With blockchain split or not, I am sure the new block structure allowing for more transactions will cause fees to drop, which would be great news, because they have been too high for too long imo.
But in case that happens, you think it will last for long? Will we be able to enjoy small fees like we used to in the good old days for a long period of time?
That's what is expected to happen because what led to this partially was the high transaction fees that people started paying but currently the transaction fees has dropped significantly compared to the time when the noise was the loudest and hopefully the price will drop further when full transaction loads resumes otherwise all this exercise would have been futile.