There’s actually no real benefit to have a “Genre” custom tag category because there’s a dedicated field for that. Rekordbox made this category a default for some reason. At the same time, RB only supports 4 custom tag categories which is a real bottleneck when syncing with LXC if one don’t want to lose all their categories.
So I suggest that there’s an option to move a custom category to the genre field under the hood. If this is enabled, a custom tag category will be freed up for other use while keeping sync to RB frictionless. Furthermore, all the benefits of the custom tag UX in LXC are maintained and no adjustments in the individual workflow is necessary.
I know that it’s already possible to do the mapping manually with the “Write Tags” operation. But the interface to interact with genres in LXC is not that great and it lacks shortcut integration.
Of course, all of this is to workaround the tricky problem of syncing n to 4 tag categories from LXC to RB and vice versa.