It leaks: gave up trying to fix it.
The new shower will have a similar head (might use the one we have now, actually) and the same pump, so the actual delivery of wetness won't change, and it'll be easier to clean and we'll have more space in the bathroom and we'll be able to use the showerhead to hose Jack down in the bath and L can do her hair hung over the bath edge and all kinds of other stuff.