The wii U just got plenty of even first party droughts because the development teams was struggling to develop in HD.
So, it seems that the pipeline of games would likely to be more crowded than 3DS + Wii U.
Games like xenoblade X wouldnt be possible, probably delayed to switch 2.
I dont even imagine what would happened to Bayonetta.
The sparse third party initiative (on CoD, assassins creed, batman, zombi U) would be gone, except by skylanders, lego, just dance, rayman.
Also, 3DS library alone could carry it.
Seems it would do much better than 3DS + Wii U combined, and keep the momentum going on to switch 2 (what switch is in our timeline).
Not only what we already got on switch, but also projects that went to wii U.