What's the thing you've regretted buying from the ingame store or DLC?

The Moldy Legion mask (frank). and the Splintered set for Hag. They used to be so dark that they were practically black which looked awesome, but after the devs did this update:

Adjusted certain darker cosmetics that gave players an advantage to be lighter. (Update 3.0.0)

That mask and the Hag skin got brightened up so much that they practically look like the default skins. I understood it needed to be done for the survivors; invisible Claudette's and Adam's were plaguing the game with a natural advantage, but doing this for killers made no sense whatsoever. Unlike survivors, the killers have a great red beacon coming from their forehead and a TR to tell you they are in the area. Even worse, take GF, as a "Stealth" killer the last thing he needs is bright cosmetics! He still has the bright mask, so giving him a dark outfit as an advantage actually works to aid his jump scares and play-style, but the darkest outfit he has is his default one, and that is a laughably easy to spot bright gray! The whole reason I bought those cosmetics was because it made the killers dark and creepy, but it did nothing to give them an advantage because of their Red Stain and TR. Killers don't need to hide like survivors do, unless they are stealth killers, so why the hell brighten up their cosmetics? There have never been any complaints about killers being too hard to see due to the cosmetics, but in contrast there has been a plethora of them concerning survivors. Gimme back my killers creepy dark cosmetics!