Coming from Miro, panning with the left mouse button, selecting with right mouse button and zooming with mouse wheel seems more natural during brainstorming than the current defaults (which make more sense for design work IMHO).
For sure designers that work day in and day out in the design part of Figma would rather keep their usual bindings.
Being able to change binding settings or customize the actions would be great for those of us that look forward to using Figjam, come from Miro, might even continue using Miro in some contexts/teams, and won’t really be using the design side of Figma much.