So, the "times of the Gentiles" start in 70 CE
How could that be since Jerusalem had been under Gentile rule since the destruction of the first Temple. So therefore the Gentle times had to begin when Jerusalem lost its sovereignty and the Jews were subjugated. Even after the restoration, Gentiles ruled Jerusalem, from Babylon to Rome and beyond so the trampling must have begun in the past and Jesus must have been referring to the completion. The nature of grammar is that another meaning is possible, but trampling beginning in the future doesn’t make sense for the reasons I explained.
Interestimgly, Jehoiakim was appoimted king of Judah by Nebuchanezzar in Babylon during the deportation so technically he was the last king of Judah but purely a mockery and totally insignificant and meaningless . A king over nobody.