There are 3 major errors...
1) From a "pi$$ taking" point of view. They've told us about the "looking fearsome" thing. You can't do that. It's like wearing one of those hold-all things to make you look good for a party, then spending the whole party telling everyone you're wearing it. Pointless.
2) From a financial point of view. All they had to do was make something even remotely sell-able. Shirt revenue would've been up anyway the year after they won it. All they had to do was make a traditional Cherry & White hoops, stick the Champions patch on the arm and watch them fly off the shelves.
3) From a fan happiness point of view. The World Club Challenge is on the world stage, and they have to turn up dressed in pink. If they go on to win, all the photos of them holding the trophy up are in a pink kit. Some idiot somewhere has ruined the history books.
Whoever approved that particular kit, for this particular post championship winning season is a silly, silly man.