Thank you for sharing. You've made some interesting points and looking back I agree with you. (I've clipped your post in order to not create huge quote posts)
As a kid I liked how the Freeza fight progressed with Freezas new forms, Gohan's outburst and then the return of Piccolo but it soon turns into the "Let's wait for Goku" trope. And yes, the whole SSJ thing is really driven into the ground at that point.
Plus, even when Goku transforms it still seems to take ages for the fight to finish.
Not to mention that the Ginyu Force was basically done when Goku arrived. Vegeta teaming up with Gohan and Kuririn was interesting, especially against Recoome. With some more balancing the fights against the Ginyus could have been a lot more fun. Now it's basically over once Goku lands.
You and Julie really changed my opinion around. Namek would have been so much more interesting without Goku. This would also help with Gohans progression leading into the Garlic Jr and Cell sagas.