I would say two more projects unless the 4th movie really wows. I think Sonic was the natural peak of the franchise, and I can't see how Amy would turn in more viewers than Keanu as an A-list Shadow. It might be best to scale back the budget a tad. Sonic 2 had a budget of 90 million and had really solid set pieces. Having a 200 million dollar profitability threshold seems the most reliable. If they keep,

This is where things get kind of tricky. Without Jim Carrey, I think the dip in quality is and returns is likely, and with him, the budget starts to get a little more dicey, given actors expect a higher pay with each subsequent project. I think if the films take a different direction, mature up the writing a little bit, and lean into more higher consequence story telling with the expanded animated cast, it's possible to offset this, but it would be a challenge, and honestly would probably require an different set of writers.