I've enjoyed my time with Splatoon, but I do have 2 gripes:
1) Why is there no pointer support with the Wii Remote/Nunchuk? Seems like a serious oversight, since this would be infinitely better than the gyro controls on the GamePad.
2) Why do I need to basically quit the game to change my load out? After I see what my teammates have, I think I should at least be able to change my weapon. If my whole team has paint rollers and so do I, we're going to get trampled by the opposing team if they have a nice mix of weaponry.
I think both can be addressed easily, but I have my doubts about either changing. Regardless, I think that Nintendo's done a nice job with the game and they've really supported it well. I do feel like it was priced too high at release and those who've gotten in at $30-$40 hit the sweet spot.