> It merely had a slightly lower maximum nose-up because of the increased engine thrust or something like that. It wasn't the engine thrust. There were a bunch

> It merely had a slightly lower maximum nose-up because of the increased engine thrust or something like that. It wasn't the engine thrust. There were a bunch of subtle design changes because newer, fuel efficient engines are much larger than the style of engine when the 737 was first designed. Unlike the competing A320, the 737 didn't have the necessary clearance under the wing to fit the new engines. They had to make a bunch of tweaks like moving the engine higher up, further forward, tweak the wings etc. to make it fit with the necessary ground clearance. These subtle differences added up so they added MCAS to make it handle closer to the original design.