I don’t have much to add to the excellent advice you’ve already received, but I concur with @Kadaxas that Wu Kong should be on your list to level up if you prioritize titans.
I have a maxed out Wu who is now benched due to the fact I have Gazelle
@Math4lyfe is wise to suggest you consider costumes.
I don’t see that anyone called out Kiril. He is super useful for titans and depending upon how you raid, he may also be good for that reason. If you raid with healers, then they are solid investments. If you prioritize war, then I would say that’s another vote in their favor. You already have Boldtusk, Melendor and Rigard, but seconds of them are useful for wars as well.
I also have a maxed Kiril with some emblems on
I, personally, would not invest in another Hu Tao nor in Skittleskull since you have better yellows and greens more worthy of the materials (specifically Wu Kong and Melendor). While Kashhrek is a solid tank, at some point he outlives his usefulness (that point being when you have a better tank since Kashhrek is not good to raid with and his only role is on defense). I would cross your fingers for a Caedmon. Finally, while a second Grimm is a good idea (for wars) I would prioritize Sonya over him since her debuff is very useful.
And yes I’m keeping Hu Tao and Skittle on the bench at 3.70. Would rather keep the materials as I have better than them.
I also have a maxed out Caedmon and two maxed Grimms haha. My Kashrrek rarely gets used these days, he was a good tank while I needed him. I may remove his emblems though actually.
Thank you for your reply!
I’ve maxed out Li Xiu’s costume and I’m working on a second Sonya now for dispel in wars