Mixing snow and bikes in the dumbest way possible would be to create a “slalom skiing but with bikes instead of skiis.” This idea is not practical as bikes are not suitable for slalom skiing. Even if there was a need for “wintertime biking on snow,” there are better options than this. The UCI could create a more compelling event to watch, such as fatbike XC courses, which would be similar to standard XC racing but in a unique format.
Another option would be to borrow something from ski racing and create “skiercross but on bikes,” which would be wild and exciting. This could be similar to Dual Slalom, but with bigger and more elaborate courses. Using bikes with skis instead of tires could make it even more like skiercross. It might also be better to leave snow as the domain of skiing and for weird old guys with beards who like to ride their fatbikes through snowy woods.
In summary, mixing snow and bikes in the dumbest way possible is not practical. There are better options such as fatbike XC courses or “skiercross on bikes” that would be more compelling to watch. It might be better to leave snow as the domain of skiing and for those who enjoy riding their fatbikes through snowy woods.