I wished they made a distinction between Titan Shang Tsung and new era Shang Tsung. I get that he's playable, but it would have been dope to see Titan Shang Tsung with his enhanced variations of his MK11 abilities specifically his green energy projectile and his ability to transform into Reptile (performing his classic slide and forceball) and Ermac (doing his telekinteic lift) and Rain (the roundhouse kick). They could've made him taller and gave him the MK3 face paint and white eyes to make him look more menacing. They could've also had him getting assists from Dark Sindel, Dark Raiden, or Dark Geras.
And they went crazy merging all these characters in the final chapter, but it would've made sense if Shang Tsung transformed mid fight (like Shinnok in MKX) and he betrays by absorbing Quan Chi into himself and now he has some of Quan's abilities as well.