Should we fix poor design

Sugar (or condensed milk) in tea I get often stays unmixed at the bottom. I forget to stir it. Is that poor design that should be fixed? Or is the steadily increasing sweetness of the tea a brilliant feature? Anyway, I therefore lick the bottom of the cup to get every last bit of sweetness. But this cup is so deep that my tongue can just about reach the bottom. And I can&rsquo;t reach the bottom…