You can use olive oil instead of butter, add way more garlic, add worchester sauce in addition to or instead of balsamic vinegar, add red wine or chili flakes if you want.
I usually make a double batch at once.
I know this sounds wrong, but I assure you in this rare case canned tomatoes are better than fresh for this.
Another favorite for me is puttanesca, people will think it is the best ever if you don’t tell them it contains anchovies. Real puttanesca has lots of garlic but no onion at all