I think the Wii U’s successor will come around 2019/2020…as well as a new handheld to succeed the 3DS around the same time. Both systems will be extremely connected. I think the 3DS will dominate 2013(already is), 2014, 2015 and 2016. 2017 will show some 3DS fatigue and Nintendo will begin teasing a successor. The Wii U successor will definitely come around 2019ish. And by that time, it won’t be until 2023 that Sony releases the PS5..Microsoft will leave the gaming industry and will be replaced by Valve in the 3-way competition.

2015-2019 will be the Wii U’s BIG BIG years.
2013 – 2017 will be the 3DS’ BIG BIG years.
PS Vita will show some popularity in 2016 – 2020…but will quickly fade thereafter.

You're a fun guy. This prediction is plausible.

That box is damn ugly.

And there's a big problem with what you say. The Vita won't have big years in 2016 onwards, it'd be lucky to be in production still at that point.