DLC Season Passes
Perpetrators: EA, Microsoft, Rockstar, Activision
Worst Example: Call of Duty
There are few things as arrogant in the gaming industry as the concept of a DLC Season Pass. Asking your customers to fork over another $30-$50 immediately after they've just dropped $60 on your game as a glorified pre-order for DLC they have no information about is sheer hubris. This puts consumers completely at the mercy of the publisher's whims because very rarely are specific plans for the content announced until shortly before they're out, meaning consumers are essentially paying for a hope that good DLC will be coming down the road.
It's also a pretty raw deal for developers when you think about it because if their game's a bomb, or the DLC just isn't selling, they're locked into creating it regardless of how profitable it'll be for them. Sure, it's possible that the publisher could have offered a failsafe clause for developers in these circumstances, or just fronted a stack of cash to ensure it's worth their time, but in the probable situation where they didn't, it means developers have to sacrifice time and money on content that might not have an audience just because publishers got greedy and wanted all of their money up front.
The Solution: Give a detailed breakdown of each piece of DLC before you start selling the whole kit and kaboodle