The Dreamcast VMU was ridiculous in exactly the right way. A memory card did not need a screen, buttons, sound, batteries, tiny games, and the confidence of a pocket computer. Sega did it anyway, and I respect the nonsense.
The sensible version of the Visual Memory Unit would have just stored saves. Maybe it would have had a label area if everyone was feeling fancy. Instead, it sat in the controller like a tiny companion device, showing bits of game information and occasionally pretending it was a handheld. It was not elegant. It beeped. It ate batteries. It was very Sega.
That is the bit I still like. The VMU feels like hardware from a timeline where every accessory was allowed to be a little too ambitious. Not everything had to be a perfect platform strategy. Sometimes a memory card could wake up and decide it wanted a D-pad. Sometimes the controller could have a window in it because why not.
I would not want every modern console to bring this back exactly. It would probably become an app, a subscription notification surface, or a tiny shop window for cosmetics. The charm was that it felt specific, strange, and slightly over-engineered for fun. The VMU was a daft answer to a normal problem, and gaming hardware could do with a bit more of that energy now and then.