The Wii U CPU is not really a flaw, it is just how the console was designed. The overall package makes sense in my opinion. So yes, developers would have to adapt to the hardware, but this is was always the case until that gen, so nothing had changed.
You could totally run other third party games on Wii U, you simply had to rely less on the CPU and push more on the much more capable GPU. Also 2 GB of RAM instead of 512 MB. Need for Speed Most Wanted U is the perfect example that the console could run multiplats without issue.
CPU wise was indeed a weak point and if stronger, probably would provide less obstacles for third parties to take advantage easily from the hardware.
https://www.digitalspy.com/videogam...ons-revealed-no-first-touch-or-ultimate-team/ "
"There are different processors, CPUs and different libraries. One of the challenges is we have to pick a point in time where the code base is stable and bring it over. That's probably the most challenging thing.
"We can't take a feature they're working on because we get it working and they change it."
Yes, NFSMW U it´s one of the few AAA multiplattform running on par with PS360, ironically from EA, who were the first to abandon the ship. But they made an effort with some of their AAA franchises before that and at least i´d give them that
https://www.digitalfoundry.net/articles/digitalfoundry-mass-effect-3-wii-u-face-off
Also, with Fifa who should be an easier task, they dropped off some features. BUT, also increased visuals
http://www.nintendoworldreport.com/...hical-improvements-focused-on-crowd-and-pitch for people like
Geometric-Crusher
who is stating quite the opposite: "
It's not going to be miles ahead," Prior then cautioned, wary of setting expectations too high for a game that, as we spoke, was still being feverishly developed with the intention of hitting the market in step with Nintendo's upcoming console. "But two things we have improved just in terms of the fidelity and quality are the pitch," he detailed. "If you have a look at the pitch texture there's a lot more detail in it and we're working on that as we speak to hopefully improve it even further."

Prior also explained another graphical improvement they had pursued based on user feedback: the crowd. "One of the common complaints is the crowd, and if you look at the crowd on the Wii U it's double the resolution." These were apparently conscious choices by the development team, because, as Prior put it, "we had limited resources in which to improve, so we wanted to make sure we got the biggest bang for the buck, if you will. Obviously the pitch is something you're staring at like 90 percent of the time when you're playing, so crowd and pitch were two areas we focused on."
Also, another one for the deniers
https://www.eurogamer.net/deus-ex-human-revolution-directors-cut-for-wii-u-confirmed-and-yes-theyve-fixed-the-boss-battles#:~:text=%22It's%20much%20sharper%2C%22%20Dugas,carried%20before%20taking%20them%20on.
"
"It's much sharper," Dugas says. "There are more nuances between the light and dark places."
You might also notice a new fog system that, according to Pedneault, "makes the atmosphere really stand out". Shadows that were choppy have been smoothed, Dugas says. "It makes a big difference."
Pedneault insists these improvements wouldn't be possible on Xbox 360 simply because there's not enough disc space available. Neither, Dugas says, would the anti-aliasing, which wasn't present in the other console versions but is in the Wii U version.
"It's more powerful on the Wii U," Dugas says. "Even some of the graphics that were improved already on the 360 for The Missing Link, we were able to go a little bit farther with the Wii U, just because of the hardware. In terms of the shadows, which are smoothed out, it's much different than the Xbox version."
From a more functional perspective, Eidos Montreal used the Wii U GamePad to create a brand new augmentation, what it calls the Neural Hub. Apparently one criticism the developers heard was players wanted to know how much health enemies had and what loot they carried before taking them on. The game's Smart Vision augmentation, which allows players to see enemies through walls, was extended and fused with the GamePad, resulting in the Neural Hub."
BTW, forgot to mention, i sill play with my Wii U time to time (i have 1 TB full of WiiU, WII, GCN,DS and SNES games for it). Used to hate at the beginning, but i´ve learn to love it and it has a great catalogue of gems, sadly was released at the wrong time, underpowered (compared with the true next gen and sadly being just slightly more powerful than PS360 and also have the CPU bottleneck didn´t helped) and with a confusing concept. But as someone stated before: "The WiiU paved the way for the Switch to run"