The nausea/nether portal wobbling is annoying...
I know, there's an option for that in the Accessibility Settings, but with that there's a green vignette instead. I think this tweak would fit into the mod. :)

There is now a disableNauseaEffect option in the latest build here: https://masa.dy.fi/mcmods/client_mods/?mcver=1.16.4