My first choices would be Speed Racer and Star Blazers, but those were syndicated cartoons shown on weekdays after school. It is hard to remember any actual Saturday morning cartoon that I liked as much.
I do not count Looney Toons since those were originally shown in theaters. And I am not counting the live action series that also were shown on Saturday morning.
I guess Superfriends counts here since it was originally just on Saturday mornings for early seasons before going syndicated in later seasons.
Gut reaction answer: yes, but it means I will hate summer due to having the fur. But being able to become that goofy girl full time without needing padding, that is a win for me.