Hey there,
Glad that you're enjoying the game! This is something that we are looking into moving forward, though if a dev uses certain features of mapper 111, or uses them in certain ways, legacy mappers are not a viable option without cutting features or content. My personal advice as a PowerPak and EverDrive user would be to use save states if they are supported by the NT Mini Noir. I do not know enough about the system to know if they are supported or not, however. Thanks for the feedback, and we'll see what we can do in the future on our end, though hopefully Analogue offers a fuller feature set by then.