For the user, the problem is if you reinvent the wheel poorly. Remember all those terrible ‘scroll jacking’ website? The bar to reinvent the wheel has to be hi

For the user, the problem is if you reinvent the wheel poorly. Remember all those terrible ‘scroll jacking’ website? The bar to reinvent the wheel has to be high. You should have significant value to add, and you’ve got to re-implement all the other behavior users expect.