Just ordered an elegoo neptune 4 pro and planning to just put it on the floor since I have no extra tables. Other than not looking as good, I don't see too much of a disadvantage. Maybe I can raise it up with the filament boxes? What do you guys think?
If it's on carpet or a rug, that could potentially block vents or get tangled in a belt.
If it's in a high-traffic area, it might be kicked or tripped over.
If it's too close to a (particularly cold) vent and not in an enclosure, that could cause some warping of parts during print.
Those are really the only concerns I can think of. If you choose a spot on the floor where none of those are an issue, I'd think it should work as well on the floor as on a desk or table.