I would need to migrate my chunky config files. Some issues should be easy (moving files to ~/.config), some other trickier (vim-specific functionality).

But alas, the motivation is not big enough for me to invest the effort.

Some features I'd like from Neovim are built-in LSP (but Vim has that thank to plugins), and tree-sitter based syntax highlighting.

That's not enough for me to move to Neovim.