Are you serious? Sindel is undoubtedly one of the most unique & fascinating characters in the entire series.
Maybe to you, but Sindel, Stryker and Sheeva could be absent in MK games, from here on out, and I wouldn't really bat an eyelash.
Hm, casuals I know like Jax because he's the cool Black guy lol.
Casuals that I know like Scorpion, Sub-Zero, Liu Kang, Raiden, Noob Saibot, Ermac, Reptile, Kitana, Mileena, Kung Lao, Johnny Cage, Cyrax and Kabal.
If I go up to my 4 cousins and 3 best friends who haven't played MK since 1992, and I ask them who their favorite characters are, I can tell you right now that 6 out of those 7 people will pick the big 4 (Scorpion, Sub-Zero, Liu Kang, Raiden) and the 4th person would likely pick Smoke, Noob Saibot, Ermac, Reptile, Kitana, Mileena, Kung Lao, Johnny Cage, Cyrax or Kabal.
My wife is another person that usually never plays Mortal Kombat, but she'll ask me if "purple Kitana and Mileena" (she gets them mixed up) are in.
i really think casual fans like him. when some were complaining about Jax saying "gotcha", casual fans LOVE that. they do!!!
i would assume that MKX maybe Johnny,Sonya, and Jax last game for awhile IF fans take to Jacqui and Cassie.
I have yet to see many casual fans that like him.
Again, if there are casuals that like him, then it's a cult following like some of the other lesser characters.
For the most part, I hardly hear him being uttered among people who don't usually play MK.
As for Jax, Sonya and Johnny having their last hurrah in MKX, and sitting out for a while, I completely agree if people love Jacqui and Cassie.