The mount anouncement made my day as a conan exiles player and someone that made this suggestion several times.
But now that i know you didn’t give up on the promised features, how about making the creatures able to swim again, like in EA? You already have some swimming animations! Game is balanced now, and, if you can disable creatures and thralls to enter water, just make the swimming ones able to enter, like crocs for example.
I think the lemurian dungeon was a really missed oportunity to implement swiming creatures. But now with the mounts anouncement, i have hope. And, after the swimming ones (you can take one more year, i won’t complain), you can make flying ones to make bow and arrow more fun.