I only got a wii a few years after launch when I could get one cheap. When I got it I was both impressed and disappointed. I liked the user interface and many of the Nintendo games but was disappointed by the performance level. Many of the games were not just weak compared to the 360 and PS3 but weak compared to the original xbox. There was an ambition to original xbox games no doubt thanks to its 64MB of memory, PC architecture and built in hard drive that you didn't get on wii. I spent the first few years of wii ownership playing more gamecube games than wii games. That's not true now but for a long time it was. The gamecube had decent not great third party support where as for wii most third party stuff was often casual or quite terrible compared tot he 360 and PS3 versions of the same games.
In the end the wii was something that enabled Nintendo to stay in the console race. A huge success for them but not so much for actual owners. I think the apathy of people to the wii u may be partly due to the legacy of wii.
It's clear the motion controller was a huge success and the experience of playing games using that is something the wii bought fresh to gaming. It's a shame the console itself was so horribly compromised and uncompetitive in performance.
So my big issue with the wii is the performance level and same criticism can be labelled at wii u. In fact you wonder if Nintendo ever bought out a powerful console would consumers believe it was powerful such is their reputation nowadays for weak hardware.
