Fantastic Beasts is nothing like Indiana Jones, as the general canvas is about Grindelwald's rise to power.

It would benefit the story, and fit the canon, for Dumbledore and Grindelwald to be different sides of the same coin. They had the same goal and motivation, just apposing views on how to achieve them. The problem is that three films was fine, five is just way too excessive.

With Newt and Co. somehow running around, and being involved.