Hi. I am recently playing Nintendo 64 games since Project64 1.6 and there is one thing I think the new Project64 2.3 does better than the cores that I wish retroarch could use. The option to use a key-modifier to invert the aim.
The thing that keeps me out of n64 games since a long time was having to press DOWN so i could aim UP and that kills me. For example, when I press and hold R1 on my gamepad, project64 invert the aim on my Left and/or Right Analog so i can play shooting games the proper way. Here’s a screenshot of the feature.