Eglot is a lot more bare-bones than lsp-mode – leaving 'UI chrome' to external packages that can work generically with emacs' existing ecosystem (flymake/eldoc/etc.) – and this generally works for me. Making similar migrations in my config has worked out very well – notably to use vertico family of packages for completions.
Are there packages you like that provide additional chrome on what eglot makes available? I'm particularly interested in project diagnostics from flymake, but I'm curious to see what else folks have come across.