Run an ordinary database connection pool in shared memory mode instead of offloading it to a separate process via PGBouncer. Do that with all of the other resource pools as well. Heck, for one off webservers with low load you can do in memory session handling without needing to pull in memcache or redis until you truly need multiple processes or the sessions to survive a restart.

What would I do differently? Actually make engineering choices based on the current project status and priorities without having those choices made for me.