Basically this. Seeing as it’s probably extremely hard to get actual hair styles thanks to how they shaped the new worgen heads, they could skip the actual hair options, and give us tail options. They already showed they can have different tail options with pandarens and draeneis, so why not go the extra mile with worgen tails. It would give worgens way more options to play with, while giving us the tail option we want, and also make the job easier just focusing multiple options on one specific spot and give worgens that unique set options to them that make worgens more appealing to pick in terms of options. I’m a fan of the whispy option, so yeah, don’t just give us optional tails, but also give us tail options if you can Blizzard. 
Also be sure to check out the worgen customization thread. Keori did a good job compiling requests and ideas that could go in to the eventual worgen options we desperately need and will eventually get!