Well, I've decided to return my Deluxe Wii U. I don't feel remorse, though, since I went in with a plan. None of the launch games warranted a system purchase for me, but I preordered the system just in case it turned out to be another Wii phenomenon and would be difficult to find if/when I finally decided to jump in. Now that we know that's not the case, I can feel confident that I'll be able to easily get another one if I change my mind later. I at least got to take advantage of the extended Holiday return period to trial run the system.
On to my impressions.
The only Wii U games I've played were the pack-in Nintendoland and NSMBU. I enjoyed both, and even completed the main game in NSMBU. Though, I thought the Gamepad was shoe horned into Nintendoland and wasn't really necessary aside from the Haunted Mansion game. Several of the games would've played better using a Sixaxis type controller and the big screen, instead of forcing gameplay onto the Gamepad. Same deal with NSMBU. Aside from the hidden items like the moon which only showed up on the Gamepad, Nintendo could have easily used the Wii Remote and onscreen pointer for boost mode. While I did have fun with those games, it was short-lived. I've actually went back to playing PS3 games the last couple of weeks, and have had no desire to even power on my Wii U. I also have a sealed Zombie U, but I have no desire to even play it, and that will be returned, too.
Regarding the OS and apps. Everyone already knows how slow the system feels. It's painstakingly slow to the point of making me want to change activities as little as possible. And as for Miiverse, it really doesn't appeal to me. I'd rather read gaming discussions on GAF and look at artwork elsewhere. I turned off Miiverse comments in NSMBU because they're rarely helpful and they just clutter the overworld. I don't need social media forced into my games.
Regarding the controllers, my god Nintendo makes you pay up the ass with money and physical space to make the Wii U a fully functional multiplayer console. Wanna play NSMBU co-op with your wife? Well, then you have to buy another Wii Remote, because the Gamepad only works in boost mode. Oh, and the Pro Controller is inexplicably incompatible with it, too.
Regarding the Gamepad in particular, I wish Nintendo never went that route. It feels like Nintendo was banking on another novelty to catapult the Wii U the way the Wii Remote did for the Wii, and they ended up sacrificing other stuff to do it. The whole game on the small screen just doesn't appeal to me. I figured I'd try it out, and it's as unappealing as I thought it would be. If I want to game on the small screen, I'll grab my phone, PSP, or NDS. The worst part is that it's not always optional. Some games simply require its use, like playing an archer in the Zelda mini game. There's no reason I should be relegated to playing it on the Gamepad screen, and if the Gamepad didn't exist at all, I'd be enjoying the game on my glorious Kuro plasma. But because the Gamepad does exist, some devs will force its use, just because. Furthermore, as a primary controller it's unwieldy and the battery life sucks balls. I don't know why Nintendo didn't include a larger battery, since there's extra unused space where the battery is located. The battery life just doesn't cut it as a primary controller. You have to stay tethered during extended playing sessions which defeats the point of wireless, and that really isn't an option if you're passing it around the group during local play parties. I would have been happier had Nintendo simply kept the Nunchuck and Remote as the only controllers, and put the Gamepad money into more system power and/or a cheaper price.
My mind may be changed later, but as of now, the future looks bleak for the Wii U appealing to me. The PS4/720 are right around the corner and I'm also going to build a new gaming rig. The Wii U just came out and already feels dated to me. I may jump back in if it ever builds a compelling enough library to offset all my gripes with the system, but that's a big if, since I don't expect it to get many big 3rd party exclusives, and Nintendo's first party must-haves are few and far between.
Anecdotally, I have 2 other friends who got the system at launch, and both of them have expressed buyer's remorse. They were both excited to just be buying a new console, since it's been so long since a new console launched. But like me, they haven't played their Wii Us in a while, and are simply underwhelmed with the system.
About the only things I'll regret losing if I rebuy the console at a later time, are the cool NNIDs I was able to reserve by getting an early system.