Me too, I think the worst part about both was the price. Wii U was overpriced because of the big controller, Vita had overpriced proprietary cards.
Vita was abandoned by Sony quite early because they were a bad shape as a whole and after the PS4 doing so well from the get go they went fully on it, so it barely even had exclusives but the hardware was truly amazing for its time, OLED screen, touch on both front and back, 2 sticks like home consoles, it could have been a much better platform than the PSP.
Wii U had somw really great games, Mario 3D World, Mario Kart 8, Donkey Kong Tropical Freeze, Bayonetta 2, Xenoblade X, Mario Maker, Splatoon and Zelda Breath of the Wild. IMO the Wii U was better than the Switch exclusives wise, the Switch made it redundant with all the ports and sequels to those games, but the Wii U output was really great.