This should conclude the 1.17 designs for Vanillaccurate! Spore blossoms were the last remaining blocks to be designed for 1.17 which means Vanillaccurate is going to get an update very soon with full 1.17 block support!
Here are some screenshots with Kappa v4.1 E2 for you (using the HD_U_G9_pre24 Optifine preview for 1.17) , I made the first screenshots in the overworld above ground, and the last two are in a proper lush cave.
You can also see the proper glow berries vines as well.
HardTop Vanillaccurate 